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Reviewed on Jan 16, 2019 , Sam Vafaei, Simon Barbier, Jean-Simon Bonneterre, Yannick Khong

XFYRO xS2 Truly Wireless
HEADPHONES REVIEW

Usage Ratings - Version 1.2

Test Benches:

  • 1.2: Winter 2018
  • 1.1: Summer 2017
  • 1.0: Winter 2017
  • 0.9: Winter 2016
6.7
Mixed Usage
What it is: This is the combination of the different use cases to evaluate how versatile the headphones are. Therefore an everyday headphone should be well-rounded enough to adapt to most situations and environments without significant losses in sound quality, design ergonomics or isolation.
Score components:
6.5
Critical Listening
What it is: The level of audio fidelity a headphone can reproduce. Therefore a balanced and true representation of bass, mids, treble, soundstage and imaging, as well as a comfortable listening experience, is essential for critical listening.
Score components:
7.3
Commute/Travel
What it is: How well the headphones handle the loud environments involved in commuting or traveling. Therefore your listening experience should be comfortable, hassle-free and as isolated from noise as possible.
Score components:
7.8
Sports/Fitness
What it is: How well-adapted the headphones are, to use while doing sports or strenuous exercise. Therefore the headphones should not be too cumbersome and deliver a stable and comfortable listening experience.
Score components:
7.1
Office
What it is: How well the headphones can deliver a comfortable and isolated listening experience in an office-like environment. They should not leak much and should block the noise of a busy office.
Score components:
5.4
TV
Score components:
4.4
Gaming
Score components:
Type : In-ear
Enclosure : Closed-Back
Wireless : Truly Wireless
Noise-Cancelling : No
Mic : Yes
Transducer : Dynamic

The xFyro xS2 are decent mixed usage truly wireless in-ears with a few flaws. They are decently comfortable, but the in-ear fit might not be for everyone. They’re very portable and have a good isolation performance, making them versatile for commute and everyday casual use. They also have a nice case that feels premium, but unfortunately, it doesn’t really protect the headphones and acts more as a power bank. Their sound quality is average-at-best and our unit had a frequency response mismatch. Additionally, you must connect the right earbud first or you’ll have inverted audio channels, which is frustrating. On the upside, they have great wireless range and are stable enough for running if you can find a good fit with the provided tip options.

Test Results
Design 7.4
Sound 6.3
Isolation 8.3
Microphone 5.9
Active Features 5.1
Connectivity 2.9
Pros
  • Good isolation performance.
  • Minimal leakage.
Cons
  • Sub-par battery life.
  • Mediocre audio reproduction.
  • Hard to set up.

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7.4

Design

Score components:
XFYRO xS2 Truly Wireless Design Picture

The xFyro xS2 are truly wireless closed-back in-ears that have a decent build quality and are supposedly fully waterproof for 30 minutes at a depth of 3 feet (but we do not have a test for it currently). However, note there are reports that Bluetooth signal doesn’t work well underwater, so you can’t use them for swimming. They have a typical in-ear fit and enter the ear canal which isn’t the most comfortable for everyone. On top of this, their control scheme forces you to push the buds even further in to register commands. They come with a very well-made 850mAh charging case that acts as a power bank, but unfortunately, it doesn’t really protect the headphones. On the upside, you get additional charges for the headphones, and they are also stable enough for some light physical activity.  

Style
XFYRO xS2 Truly Wireless Design Picture 2

The xFyro xS2 are truly wireless in-ears that have a low-profile look, but a slightly bulky earbud design. They protrude quite a bit out of the ear while wearing them. They have a decent finish and don’t feel too cheap. Their included aluminum case also has a nice style and high-end finish. These headphones come in three different color variants: black, blue and red.

7.0 Comfort
What it is: Adjustability and degrees of freedom, pressure, stiffness and weight.
When it matters: When the headphones are going to be used for long durations.
Score components: Subjectively assigned
XFYRO xS2 Truly Wireless Comfort Picture
Weight : 0.02 lbs
Clamping Force
What it is: The force that the headphones exert on your head, once you have them on. This is purely a measurement of the force applied, which does not take into account the earpad's surface area and the resulting pressure you will feel, on or around your ears.
When it matters: The tighter the headphones, the more force they put on your head. This can get uncomfortable or cause pain and soreness during long listening sessions.
:
0 lbs

The xS2 feel like typical in-ears, and the fit might not be as comfortable for everyone. They enter your ear canal deeply which could be bothersome for some, but come with three different ear tip options to help you find the most comfortable fit. They are very lightweight headphones, and you don’t feel them too much when plugged into your ears. However, their control scheme forces you to push the earbud even further in your ear to register an action, which is uncomfortable.

5.3 Controls
What it is: The control scheme of the headphones, the number of functions provided, button layout and ergonomics as well as the quality of tactile feedback.
When it matters: If you want to control volume, pause your music or make phone calls without directly interacting with your audio device.
XFYRO xS2 Truly Wireless Controls Picture
Ease of use : Mediocre
Feedback : Good
Call/Music Control : Yes
Volume Control : No
Microphone Control : No
Channel Mixing
What it is: Being able to mix audio channels directly on the headphones.
When it matters: This is most useful when using a separate chat software so that you can mix in-game audio and chat audio depending on your needs.
:
N/A
Noise Canceling Control : N/A
Talk-Through : N/A
Additional Buttons : No

The control scheme of the xS2 is disappointing. While the buttons on both earbuds are clicky and offer good feedback, they aren’t easy to use. Every functionality needs you to push the earbud further inside your ear, which hurts. They also don’t have any volume control and only offer call/music management and track skipping (forward and backward).

9.2 Breathability
What it is: How hot the headphones get when you wear them for an extended period of time.
When it matters: If you often have long listening sessions or use your headphones while doing physical activities like running or working out.
Score components:
XFYRO xS2 Truly Wireless Breathability After Picture
Avg.Temp.Difference : 0.8 C

Like most in-ears, the xFyro xS2 are very breathable since they don’t trap heat under an ear cup. You shouldn’t notice the difference in temperature and shouldn’t sweat more while using them during physical activity, which is nice.

9.5 Portability
What it is: The volume of space occupied by the headphones when folded into their most compact format.
When it matters: If you're often on the move and need to carry your headphones in a bag, purse , or pocket.
Score components:
XFYRO xS2 Truly Wireless Portability Picture
L : 1.2 "
W : 1.2 "
H : 0.7 "
Volume : 1.0 Cu. Inches
Transmitter required : N/A

Like most in-ears, these headphones are very portable due to their very small design. They can easily fit in a pocket or bag and are easy to keep on you at all times. They also come with a case, which adds slight bulk, but it will still fit in pockets.

7.0 Case
What it is: The provided carrying options to protect your headphones when transporting them.
When it matters: To prevent damaging your headphones, if you often carry them in your bag or pocket.
Score components: Subjectively assigned
XFYRO xS2 Truly Wireless Case Picture
Type : Hard case
L : 4.2 "
W : 1.1 "
H : 0.9 "
Volume : 4.2 Cu. Inches

The xFyro xS2 come with a decent solid case. However, the casing doesn’t really protect the headphones as the top of the buds is exposed. Also, only magnetic force is holding the headphones in place, meaning that quick motion or impacts will make the headphones fall out of their receptacle. On the upside, the case also acts as an 850mAh rechargeable power bank, in which you can plug a USB cable to charge other devices.

7.0 Build Quality
What it is: Durability, material quality, cheap/expensive feel.
When it matters: When the headphones are going to be used by multiple users (classes/studios), by children, in tough conditions, on a daily basis, or for exercise.
Score components: Subjectively assigned
XFYRO xS2 Truly Wireless Build Quality Picture

The xFyro xS2 are decently-built headphones. The buds are made out of dense plastic and feel solid enough to survive a few impacts. The aluminum case is also very well-made and feels heavy and solid. They are also rated IP67 for great dust and water resistance. They can technically be submerged by water for 30 minutes at a depth of 3 feet but note that Bluetooth may not work as well underwater. They can be used in the shower or if it’s raining according to the manufacturer, but we do not have a test in our current test bench to measure this accurately.

7.0 Stability
What it is: How the headphones are designed to prevent them from slipping off your ears or falling off your head.
When it matters: If you plan on using the headphones while doing sports or other physical activities that requires a lot of movement.
Score components: Subjectively assigned
XFYRO xS2 Truly Wireless Stability Picture

These headphones are fairly stable if you can find the right tip size for you. You’ll be able to jog with them or wear them at the gym, but they won’t be ideal for more intense physical activity. They are very lightweight, and their truly wireless design eliminates the risk of a cable getting stuck on something and yanking the headphones out of your ears. However, they do not have stability fins in order to help them to stay in place for more intense sports.

Cable
XFYRO xS2 Truly Wireless Cable Picture
Detachable : N/A
Length : N/A
Connection : N/A

These truly wireless headphones don’t have a cable but come with a USB to micro-USB charging cable.

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Headshots 1
Headshots 2
6.3

Sound

What it is: How accurately the audio is reproduced. The tests are performed with the headphones' most commonly used features enabled (noise-cancelling, wireless, etc.)
XFYRO xS2 Truly Wireless Frequency Response

The xFyro xS2 are mediocre sounding truly wireless closed-back in-ears. These headphones have decent bass and treble ranges, as well as a good mid-range. However, they lack low-bass which results in a lack of thump and rumble. High-bass and low-mid are also overemphasized and make the mix boomy and cluttered, especially on vocals on lead instruments. Their treble is also slightly uneven, meaning leads will lack detail and some sibilances are slightly overemphasized. Overall, they are not the best sounding headphones, especially for vocal-centric music, but they may do better for bass-heavy genres. 

Our unit also had a frequency response mismatch. It is also important to note that you need to power up and connect the right earbud first, or your channels will be inverted, and you’ll hear the right channel in the left bud, and vice-versa.

7.2 Bass
What it is: Frequency Response from 20Hz-250Hz
When it matters: When the material is heavy on bass frequencies, such as those of kick drums and bass guitar.
Score components:
XFYRO xS2 Truly Wireless Bass
Std. Err.
What it is: The amount of deviation (weighted standard error) in bass frequency response (20Hz-250Hz) as compared to a target response that would sound perfectly balanced to most people.
When it matters: When a balanced and neutral (reference) bass performance is desired.
Good value: <4dB
Noticeable difference: 0.1dB
:
3.51 dB
Low-Frequency Extension
What it is: The lowest frequency at which the frequency response reaches -3dB of the target response.
When it matters: Shows how extended the bass is.
Good value: <40Hz
Noticeable difference: 5Hz
:
62.59 Hz
Low-Bass
What it is: The average amount of over/under-emphasis in frequency response from 20Hz-60Hz.
When it matters: Kick drums and low frequency effects get their 'thump' from this range. Mostly felt than heard.
Good value: +/-3dB
Noticeable difference: 0.1dB
:
-2.96 dB
Mid-Bass
What it is: The average amount of over/under-emphasis in frequency response from 60Hz-120Hz.
When it matters: Melodic bass instruments have most of their fundamental frequencies in this range. This is where the 'body' and 'punch' of the bass sits.
Good value: +/-3dB
Noticeable difference: 0.1dB
:
0.58 dB
High-Bass
What it is: The average amount of over/under-emphasis in frequency response from 120Hz-250Hz.
When it matters: Most instruments get their warmth and full-ness from this range. When over-emphasized, mixes tend to get muddy and boomy.
Good value: +/-3dB
Noticeable difference: 0.1dB
:
5.03 dB

Decent bass range performance. LFE is at 63Hz, which is below average. Low-bass, which is responsible for low-end thump and rumble, is lacking by about 3dB. While mid-bass is fairly close to our target curve, high-bass is overemphasized by over 5dB, making the bass sound muddy and boomy.

7.6 Mid
What it is: Frequency Response from 250Hz-2KHz
When it matters: When the material is heavy on mid-range frequencies. This is the case for the majority of audio content.
Score components:
XFYRO xS2 Truly Wireless Mid
Std. Err.
What it is: The amount of deviation (weighted standard error) in mid frequency response (250Hz-2.5KHz) as compared to a target response that would sound perfectly balanced to most people.
When it matters: When a balanced and neutral (reference) mid performance is desired.
Good value: <4dB
Noticeable difference: 0.1dB
:
3.15 dB
Low-Mid
What it is: The average amount of over/under-emphasis in frequency response from 250Hz-500Hz.
When it matters: Most instruments have their fundamentals or low harmonics in this range. Over-emphasis in this range sounds muddy and cluttered. Under-emphasis, thins out the vocals and lead instruments.
Good value: +/-3dB
Noticeable difference: 0.1dB
:
4.17 dB
Mid-Mid
What it is: The average amount of over/under-emphasis in frequency response from 500Hz-1KHz.
When it matters: This range is occupied mostly by upper harmonics. Over-emphasis sounds forward and boxy. Under-emphasis pushes instruments to the back of the mix.
Good value: +/-3dB
Noticeable difference: 0.1dB
:
-0.66 dB
High-Mid
What it is: The average amount of over/under-emphasis in frequency response from 1KHz-2KHz.
When it matters: Most instruments, especially vocals, get their intensity and clarity from this range. Over-emphasis sounds honky and harsh, under-emphasis sounds weak and distant.
Good value: +/-3dB
Noticeable difference: 0.1dB
:
-2.31 dB

The xS2’s mid-range performance is good. The range is fairly even and flat, but there’s an 8dB tilt favoring lower frequencies, making vocals and lead instruments sound thick and cluttered.

7.1 Treble
What it is: Frequency Response from 2KHz-20KHz
When it matters: When the material is heavy on high-range frequencies, such as voice, cymbals, and any other material where brightness, brilliance and airiness is desired.
Score components:
XFYRO xS2 Truly Wireless Treble
Std. Err.
What it is: The amount of deviation (weighted standard error) in treble frequency response (2.5KHz-20KHz) as compared to a target response that would sound perfectly balanced to most people.
When it matters: When a balanced and neutral (reference) treble performance is desired.
Good value: <4dB
Noticeable difference: 0.1dB
:
4.23 dB
Low-Treble
What it is: The average amount of over/under-emphasis in frequency response from 2KHz-5KHz.
When it matters: Almost all instruments rely on this range for their presence, detail, and articulation. Over-emphasis can sound harsh and painful. Under-emphasis hurts the comprehensibility of vocals and lead instruments.
Good value: +/-3dB
Noticeable difference: 0.1dB
:
-2.62 dB
Mid-Treble
What it is: The average amount of over/under emphasis in frequency response from 5KHz-10KHz.
When it matters: This is the sibilance range. Cymbals, vocals, and lead instruments rely on this range for brightness and presence. Over-emphasis sounds piercing and painful, under-emphasis sounds dull and lispy.
Good value: +/-3dB
Noticeable difference: 0.1dB
:
1.88 dB
High-Treble
What it is: The average amount of over/under-emphasis in frequency response from 10KHz-20KHz.
When it matters: This range gives brilliance and airiness to the sound. Over-emphasis sounds hissy, under-emphasis sounds closed-up and lifeless.
Good value: +/-3dB
Noticeable difference: 0.1dB
:
-0.65 dB

The treble performance is decent. The range is slightly uneven, and most of it is underemphasized. This results in lead instruments lacking detail and brightness. Also, the mid-treble is a bit uneven and over our target curve by about 2dB, which emphasizes some sibilances while others will lack presence.

Raw Frequency Response
What it is: The average uncompensated frequency response of the headphone. For in-ears and earbuds, this corresponds to the average of 5 measurements/re-seats on the dummy head (HMS). For over/on-ear headphones, this corresponds to the average of 5 measurements/re-seats on the HMS (Head Measurement System) for the mid and treble ranges, and 5 measurements/re-seats on 5 human subjects for the bass range.
When it matters: This is for those who want to see the raw and uncompensated frequency response of the headphone. Some of the more advanced users, are able to read and evaluate headphone frequency response in its raw form and without compensation. This will be especially useful to them if they have their own headphone compensation/target curve, which may differ from the compensation curve/target response used by RTINGS.com.
9.0 Frequency Response Consistency
What it is: The amount of deviation of each frequency response pass, from the average frequency response.
When it matters: Shows how consistently the headphones perform after re-positioning them.
Score components:
XFYRO xS2 Truly Wireless Consistency L XFYRO xS2 Truly Wireless Consistency R
Avg. Std. Deviation
What it is: The average amount of deviation in frequency response of 5 re-seats, from the average frequency response.
When it matters: Shows how consistently the headphones perform after re-positioning them.
Good value: <0.5
Noticeable difference: 0.1
:
0.21 dB

The frequency response consistency is excellent. If the user can achieve a proper fit and an air-tight seal using the assortment of tips that come with the headphones, then they should be able to get consistent bass and treble delivery every time they use the headphones.

8.3 Imaging
What it is: Imaging qualities are inherent to the audio content, the headphones have to 'reproduce' them rather than 'create' them. They determine how accurately the objects are positioned in the stereo image, and how transparent the imaging is.
When it matters: When accurate positioning of the objects in the stereo image, and clear and transparent imaging is desired.
XFYRO xS2 Truly Wireless Group Delay XFYRO xS2 Truly Wireless Phase Response
Weighted Group Delay
What it is: The average amount of group delay calculated based on a perceptual weighting filter. Group delay indicates how long it takes for each frequency to reach their maximum amplitude. This is a monaural quality and can be perceived even with one ear.
When it matters: Headphones with lower group delay have more transparent imaging and a tighter bass. Headphones with higher group delay in the bass range tend to have a wimpy and loose bass, and headphones with higher group delay in the treble range tend to have a less transparent imaging.
Good value: <0.5
Noticeable difference: 0.1
:
0.14
Weighted Amplitude Mismatch
What it is: The Left/Right balance of our test unit, that is, the amount of amplitude difference between the left and right drivers. This is not a design test, but a marker for manufacturing tolerance and ergonomics.
When it matters: When a properly balanced stereo image and low manufacturing tolerance is desired. A poor score indicates a noticeable difference in level between the left and right drivers.
Good value: <1.5
Noticeable difference: 0.1
:
0.27
Weighted Frequency Mismatch
What it is: The amount of difference (Std. Err.) between the frequency response of the left and right drivers of our test unit. This is not a design test, but a marker for manufacturing tolerance and ergonomics.
When it matters: When an even and stable stereo image, as well as a low manufacturing tolerance, is desired. A poor score indicates there may be 'holes' in the stereo image at certain frequencies.
Good value: <2
Noticeable difference: 0.1
:
3.25
Weighted Phase Mismatch
What it is: The amount of difference (Std. Err.) between the phase response of the left and right drivers of our test unit. This is not a design test, but a marker for manufacturing tolerance and ergonomics.
When it matters: When an even and stable stereo image, as well as a low manufacturing tolerance is desired. A poor score indicates there may be inaccuracies in the stereo image reproduction at certain frequencies.
Good value: <16
Noticeable difference: 3
:
6.3

The stereo imaging is excellent. Their weighted group delay is at 0.14, which is very low. The group delay graph also shows that the entire response is well below the audibility threshold. This ensures a tight bass and a transparent treble reproduction. Also, the L/R drivers of our test unit were well-matched in amplitude and phase response, but they were not in frequency response. This won't have a negative effect on the accurate placement and localization of objects (voices, instruments, video games effects) in the stereo image, but it will create unevenness and holes in the stereo field. These results are only valid for our unit, and yours may differ.

1.0 Soundstage
What it is: Soundstage qualities are not inherent to the audio content, the headphones have to 'create' them rather than 'reproduce' them. They determine whether the sound is perceived to be coming from inside or in front of the head, how open and spacious the soundstage is, how much the headphones acoustically interact with the environment, and how strong the phantom center is.
When it matters: When an accurately produced, large and spacious soundstage, similar to that of a stereo loudspeaker setup is desired.
PRTF Accuracy (Std. Dev.)
What it is: The standard deviation of the PRTF (Pinna-related transfer function) of the headphones compared to a reference loudspeaker's PRTF at 30°. This quality is monaural and can be perceived even with one ear. This test does not apply to in-ears and earbuds, due to the lack of pinna interaction.
When it matters: An accurate pinna activation is mainly responsible for how natural and speaker-like the soundstage is perceived to be. The less error in the shape of the PRTF, the more natrual and speaker-like the perception of the soundstage will be. High amounts of error may indicate a soundstage that is unnatural or odd.
Good value: <2.5
Noticeable difference: 0.1
:
N/A
PRTF Size (Avg.)
What it is: The average amplitude of the PRTF (Pinna-related transfer function) of the headphones compared to that of a reference loudspeaker's PRTF at 30°. This quality is monaural and can be perceived even with one ear. This test does not apply to in-ears and earbuds, due to the lack of pinna interaction.
When it matters: This value is responsible for the perceived size of the soundstage. The higher the value, the larger the perceived size of the soundstage. However, values above the reference (5.0dB) could result in a soundstage that is perceived as unnatural or odd.
Good value: >3.7
Noticeable difference: 0.1
:
N/A
PRTF Distance
What it is: The depth of the "10KHz notch" of the headphone's PRTF, which is caused by phase cancellations at the concha. This quality is monaural and can be perceived even with one ear. This test does not apply to in-ears and earbuds, due to the lack of pinna interaction.
When it matters: This value is mainly responsible for the perceived distance and elevation of the soundstage. A small distance value may result in a soundstage that is perceived to be located inside the head. Larger values may help pull the soundstage out from inside of the head and bring it to the front.
Good value: >13
Noticeable difference: 1
:
N/A
Openness
What it is: How open the headphones are, and how open and spacious they sound. This quality is monaural and can be perceived even with one ear. This test differentiates between acoustically and electronically produced crosstalk and only takes the acoustically generated crosstalk into account. This value is the inverse of the Noise Isolation test score, and could be indirectly related the acoustic impedance of the headphones.
When it matters: When a headphone with a sense of an open, and spacious soundstage is desired. A value of 10 indicates a fully open headphone, and a value of 0 indicates a fully closed headphone.
Good value: >7.5
Noticeable difference: 0.5
:
2.5
Acoustic Space Excitation
What it is: How loud the headphones are, and how much they excite their environment acoustically. If the headphones are loud and open enough, the sound leaking from the headphones will be affected by the environment (reflections/reverb) before reflecting back into the open headphones and to the listener's ears. This quality is monaural and can be perceived even with one ear. This value is the inverse of the Leakage test score.
When it matters: Headphones with higher excitation values, similar to openness, tend to have soundstages that are perceived as more open and spacious.
Good value: >7.5
Noticeable difference: 0.5
:
0
Correlated Crosstalk
What it is: How strong and solid the phantom center is. This is mostly a stereo quality and its effects on mono content are minimal. This test is sensitive to the phase of the crosstalk and whether it is produced acoustically or electronically.
When it matters: When a true reproduction of the stereo image is desired. A value of 0 indicates no crosstalk, or that the existing crosstalk is not correlated enough to affect the phantom center. A negative score means the crosstalk is out of phase with the original signal, resulting in a slightly wider stereo image at the expense of creating a 'hole' at the center of the stereo field. A positive score means the crosstalk is in phase and positively affecting the phantom center.
Good value: >1dB
Noticeable difference: 0.3dB
:
0.0 dB

The soundstage is poor. This is because creating an out-of-head and speaker-like soundstage is largely dependent on activating the resonances of the pinna (outer ear). The design of in-ears and earbuds is in such a way that fully bypasses the pinna and doesn't interact with it. Also, because these headphones have a closed-back enclosure, their soundstage won't be perceived to be as open as that of open-back earbuds like the Apple AirPods, Google Pixel Buds, or the Bose SoundSport Free.

7.7 Total Harmonic Distortion
What it is: The subtle, unwanted frequencies (harmonics) produced alongside the intended frequencies.
When it matters: When clean and pure sound reproduction is desired, though its effect is not as noticable as frequency response.
Score components:
XFYRO xS2 Truly Wireless Distortion
Weighted THD @ 90
What it is: The overall amount of harmonic distortion measured at 90dB SPL. To make the score more perceptually relevant, more weight is given to the higher frequencies.
When it matters: How pure the sound is at moderate listening levels.
Good value: <0.100
Noticeable difference: 0.1
:
1.209
Weighted THD @ 100
What it is: The overall amount of harmonic distortion measured at 100dB SPL. To make the score more perceptually relevant, more weight is given to the higher frequencies.
When it matters: How pure the sound is at loud listening levels.
Good value: <0.300
Noticeable difference: 0.1
:
1.559

The xFyro xS2 have a good harmonic distortion performance. In the bass range, they show little THD, even under heavy loads. However, the peaks in THD at 1.2KHz may add a bit of harshness to the sound of those frequencies. There is also no big jump in THD at heavier loads, which is most likely due to the increased flexibility of the driver at 100dB SPL.

8.3

Isolation

Score components:

The xFyro xS2 passively isolate better than some noise-canceling headphones we've tested so far. Their in-ear fit goes deep into the ear canal which creates a good seal that does not leak and blocks a good amount of noise. Also, since they barely leak, you can mask even more noise by playing your music at higher volumes without distracting the people around you. This makes them a great choice for noise sensitive environments like being at the office, and for loud, noisy conditions like being on a plane or commuting.

7.5 Noise Isolation
What it is: How much outside noise is blocked out by putting the headphones on.
When it matters: If the headphones are going to be used in a noisy envinronment (airplane, subway, etc.)
Score components:
XFYRO xS2 Truly Wireless Noise Isolation
Isolation Audio
What it is: The simulated noise isolation of the headphones, demonstrating how much outside noise is blocked out by putting the headphones on. This recording is created using an EQ and is not an actual recording. For headphones with ANC (active noise cancellation), the playback simulates the isolation with ANC enabled.
When it matters: When the headphones are going to be used in a noisy envinronment (airplane, subway, etc.)
:
Overall Attenuation
What it is: The overall amount of environmental noise reduction in dB.
When it matters: In loud envinronments like planes, trains, offices, etc.
Good value: <-20dB
Noticeable difference: 1dB
:
-24.55 dB
Bass
What it is: The overall amount of noise isolation in the bass range (20Hz-250Hz).
When it matters: When the outside noise is bass-heavy, like in airplanes.
Good value: <-15dB
Noticeable difference: 1dB
:
-13.02 dB
Mid
What it is: The overall amount of noise isolation in the mid-range (250Hz-2.5KHz).
When it matters: When the environment's noise is mid-heavy, like in an office.
Good value: <-15dB
Noticeable difference: 1dB
:
-20.17 dB
Treble
What it is: The overall amount of noise isolation in the treble range (2.5KHz-20KHz).
When it matters: When the environment's noise is treble-heavy. Although uncommon, areas with sharp sounds fall under this category.
Good value: <-30dB
Noticeable difference: 1dB
:
-40.95 dB
Self-Noise
What it is: The amount of noise created by the active electronics of the headphones (if applicable), measured from 300Hz-20KHz. Applies mostly to wireless and noise-cancelling headphones.
When it matters: If too loud, it could become distracting when listening to quiet material like podcasts and audiobooks.
Good value: <16dB
Noticeable difference: 1dB
:
22.11 dB

Their isolation performance is good (see our recommendations for the best wireless noise cancelling earbuds). Despite lacking active noise cancelation, they passively isolate a good amount of ambient noise. They achieve about 13dB of isolation in the bass range, where engine rumbles sit, which is above-average. In the mid and treble ranges, they reduce the outside noise by 20dB and 41dB respectively, both values being very good.

10 Leakage
What it is: The amount of sound bleeding out of the headphones.
When it matters: When the listener doesn't want people around them (in office, recording studio, etc.) to hear what is being listened to.
Score components:
XFYRO xS2 Truly Wireless Leakage
Leakage Audio
What it is: The simulated sound leakage heard 1 foot away from the user, while the user is listening to a 100dB SPL signal. This recording is created using an EQ and is not an actual recording.
When it matters: When you don't want people to hear what you are listening to.
:
Overall Leakage @ 1ft
What it is: The amount of sound leakage heard 1 foot away from the user, while the user is listening to a 100dB SPL signal.
When it matters: When you don't want people hear what you are listening to.
Good value: <35dB
Noticeable difference: 1dB
:
20.87 dB

The leakage performance is excellent. The xFyro xS2 basically do not leak, so there's no need to worry about disturbing people around with your music, even if you listen at very loud volumes. With the music at 100dB SPL, the leakage at 1 foot away averages at 21dB SPL and peaks at 33dB SPL, which is roughly as loud as a very calm room.

5.9

Microphone

What it is: The microphone section shows the quality of speech capture and transmission by the mic, as well as how well the microphone under test handles noisy environments.
When it matters: For your speech to be transmitted to and understood properly by the listener, the microphone needs to have a good recording quality. If the environment the microphone is being used in is noisy, a microphone with a good noise handling performance would be needed as well.
Score components:
Integrated
What it is: The microphone integrated in the ear cup or ear bud of a wireless headphone.
When it matters: For calls, gaming and voice over IP software or for any other use of the microphone.
Good value: Yes
:
Yes
In-line
What it is: The microphone inside the in-line remote of audio cables for wired and wireless headsets.
When it matters: In-line microphone are usually better than integrated mics. If you need better recording quality and noise handling for calls, gaming and voice over IP software then use the audio cable of your wired or wireless headphone if it has an inline microphone.
Good value: Yes
:
No
Boom
What it is: A typically better microphone, that's also adjustable and extends so that the mic is closer to your mouth.
When it matters: Much better recording quality and noise handling than in-line or integrated mics. Primarily used for gaming and voice over IP software.
Good value: Yes
:
No
Detachable Boom
What it is: A boom mic that is detachable from the headset.
When it matters: If you want to use your headphone outdoors without the bulk and hassle of the Boom mic.
:
N/A

The integrated microphone has a sub-par quality. In quiet environments, speech recorded or transmitted with this mic will sound noticeably thin, quite muffled and lacking in detail. However, it will still be understandable. In noisy environments, the mic will struggle to separate speech from background noise even in moderately loud situations, like a busy street.

5.8 Recording Quality
What it is: Microphone recording quality shows how natural, neutral, extended and intelligible speech would be with the device under test, in a quiet environment.
When it matters: A microphone with a good recording quality ensures that the person listening to you would hear a full, clear, and easily understandable speech. Therefore, it is important whenever a good quality of speech transmission and intelligibility is needed.
Score components:
XFYRO xS2 Truly Wireless Microphone Frequency Response
Recorded Speech
What it is: Actual audio recording of the headphone's microphone, recorded while placed on the dummy head, with speech being played back through the dummy head's mouth simulator.
When it matters: When a clean, full, and intelligible speech transmission is required.
:
LFE
What it is: Low-frequency extension shows how deep the bass response of the microphone is, and therefore, how deep and full your voice would sound to the listener. It is the lowest frequency at which the frequency response reaches -3dB of the target response.
When it matters: LFE is not a big factor in speech intelligibility and even speech recorded with a mic that has an LFE of 500Hz could still be easily understood. Therefore, it is mostly important if you are concerned with how deep and full your voice would be heard.
Good value: <150Hz
Noticeable difference: 30Hz
:
273.0 Hz
FR Std. Dev.
What it is: Frequency Response Standard Deviation shows how accurately and balanced sound is captured by the microphone at each frequency. FR Std. Dev. is calculated between LFE and HFE, and the rest of the spectrum is ignored.
When it matters: A good frequency response is desired when a natural and neutral speech quality is desired. As opposed to HFE which is more a metric for speech intelligibility, frequency response could be considered as a metric for a natural and neutral sound.
Good value: >3.5dB
Noticeable difference: 0.5dB
:
3.76 dB
HFE
What it is: High-frequency extension is the highest frequency at which the frequency response reaches -3dB of the target response. It shows how extended the treble response of the microphone is.
When it matters: HFE is one the most important factors in speech intelligibility. The higher the HFE, the brighter, more open, and more extended the speech quality will be which makes it a lot easier to understand by the listener.
Good value: >8KHz
Noticeable difference: 1KHz
:
2416.32 Hz
Weighted THD
What it is: The unwanted frequencies (harmonics) produced alongside the intended frequencies, which cause deformation of an output signal compared to its input.
When it matters: When clean and pure sound reproduction is desired, though its effect is not as noticable as frequency response.
Good value: <1.5
Noticeable difference: 1.0
:
11.312
Gain
What it is: Shows how much louder the microphone can go above our reference loudness level. The gain value is reported relative to our reference level, which is 94dB at a distance of 5cm from the mouth.
When it matters: A microphone with a high gain is important when the input signal (speech) is very quiet. For example when whispering, or talking on the phone in a library.
Good value: >18dB
Noticeable difference: 3dB
:
33.06 dB

The xS2’s microphone has a sub-par recording quality. The LFE (low-frequency extension) of 273Hz means speech recorded or transmitted will sound noticeably thin. The HFE (high-frequency extension) of 2.4KHz is poor and results in speech that is muffled and lacking in detail. It also negatively affects the intelligibility of speech but will still be understandable in very quiet environments.

5.9 Noise Handling
What it is: How well the microphone is able to separate speech from background noise, so that the transmission would include more voice and less noise.
When it matters: When a clean and intelligible speech transmission is desired in a noisy situation like talking on the phone on a busy street or on the bus.
Score components:
XFYRO xS2 Truly Wireless SpNR
Speech + Pink Noise :
Speech + Subway Noise :
SpNR
What it is: Speech to Noise Ratio is the difference in level between speech and background noise as heard by the listener
When it matters: If the microphone is going to be used in a noisy environment, it is important for it to be able to separate the speech from background noise, so the voice would be easily audible and understandable.
Good value: >24dB
Noticeable difference: 3dB
:
10.24 dB

The integrated mic is sub-par at noise-handling. In our SpNR test, they achieved a speech-to-noise ratio of 10dB, indicating they are best suited for quiet environments and will struggle to separate speech from ambient noise in moderate and loud situations.

5.1

Active Features

What it is: Headphones with active components that require a battery. This includes noise cancelling and wireless headphones that actively reduce noise or transmit audio via a wireless connection.
When it matters: How suitable the power and wireless specifications of an active headphone will be, depending on your listening habits. The range and/or discharge time of the active headphone you select will be important if you're often on the move or have long uninterrupted listening sessions.
Score components:

The xFyro xS2 have a sub-par battery life with slightly above 3.3 hours of playback on one charge. However, thanks to the charging case, they get additional battery life. They advertised 5 hours for one charge, so we also expect the 30-hour of continuous playback to be lower than expected. Additionally, they take 1.5 hours of charging, which is disappointing for such a short battery life. On the upside, the case acts as an 850mAh power bank which you can use to charge other devices too. Unfortunately, they do not have a companion app with customization options.

5.7 Battery
What it is: The power source of your headphones. All headphones with active features have a battery that will deplete over time.
When it matters: To continue using the active features of your headphones. Some models lose features or switch off completely when the battery is drained, which limits what you can do with them until the next charge.
Battery Type
What it is: The type of battery that the headphones use. Usually AAA or embedded, Li-ion rechargeable batteries.
When it matters: When your headphones run out of power. Rechargeable batteries usually charge via the headphones Micro-USB port whereas AAA batteries have to be replaced or charged with an external device.
:
Rechargable
Battery Life
What it is: The amount of time it takes for a headphones' battery to be completely drained. Battery life will vary depending on the active features used and volume level.
When it matters: For active headphones that connect wirelessly, have noise cancellation or other audio-enhancing features, that cease to work once the battery is dead.
Good value: >10hrs
Noticeable difference: 0.5hrs
:
3.3 hrs
Charge Time
What it is: The amount of time your active headphones have to be connected to a power source to charge from 0 to a 100%. However, charging time will vary depending on your power source.
When it matters: To be able to use the active features of your headphones. Especially, wireless ones that completely switch off and need to be recharged when the battery is dead.
Good value: 2h or less
Noticeable difference: 0.25h
:
1.5 hrs
Power Saving Feature
What it is: A feature that turns off the headphones, after a set time, when they're not in use.
When it matters: To prolong battery life when the headphones are not being used, or if you forget to manually turn off your headphones.
:
Standby mode
Audio while charging
What it is: Some active headphones remain usable while charging. They continue to stream audio and do not disable other active features.
When it matters: This makes sure that your headphones's battery are not being drained when you're relatively close to a power source. However, this means wireless headphones will need a wired connection to the power source during the charging process.
:
No
Passive Playback
What it is: Active headphones that still work when all their active features are turned off or out of power.
When it matters: If you run out of power and do not have spare AA/AAA batteries or access to a power source to recharge your headphones.
:
No

These headphones offer just above 3 hours of continuous playback on one charge. This is disappointing when compared to the 5 hours that were advertised by xFyro, especially since they take an hour and a half to charge fully. However, the case acts as a power bank for the headphones, and you can also charge other devices with it. You can expect a total of 30 hours of battery life according to the specs sheet. They also have a quick charge feature that gives you 75% of battery life in only 30 minutes of charging, but we can’t measure this accurately with our current test bench. Also, they go in a standby mode after being idle for a few minutes and can last up to 300 hours according to xFyro.

0 App Support
What it is: The additional app provided to enhance your listening experience. They typically deliver a set of practical features that give you more control over the sound, noise cancelling and effects that the headphones produce.
When it matters: An app with a lot of features allows you to customize your listening experience to suit your taste and preferences. For example, additions like an equalizer can give you more bass or treble and room effects can simulate a bigger Soundstage in closed back headphones.
Score components: Subjectively assigned
App Name : N/A
iOS : N/A
Android : N/A
Mac OS : N/A
Windows : N/A
Equalizer
What it is: Parametric, graphic or preset sound profiles that slightly alter the frequency response.
When it matters: If you want to tailor, your listening experience. Depending on what you're listening to you may want more or less bass for some tracks or more mid-range for vocals-heavy audio.
:
N/A
ANC control
What it is: Control over the Active noise canceling technology. This could be either a simple on/off button, and adjustable slider or even adaptive self-regulating noise cancellation.
When it matters: If you're in an environment where you need to monitor your surroundings or completely isolate yourself from ambient noise.
:
N/A
Mic Control : N/A
Room effects
What it is: Room effects that enhance the audio quality to make it more immersive.
When it matters: If you want to further tweak your listening experience. Adding room effects, can simulate a more spacious Soundstage or deliver a surround sound-like feel.
:
N/A
Playback control
What it is: An in-app player that gives you access to play/stop, track skipping or volume controls directly with the app.
When it matters: It's a shortcut that allows you to control your audio without leaving the application.
:
N/A
Button Mapping : N/A
Surround Sound : N/A

These headphones do not have a companion app with customizable options.

2.9

Connectivity

What it is: The inputs and outputs of wired and wireless headphones, as well as their latency performance and range.
When it matters: To know how compatible your Bluetooth device, console or PC will be with your wired or wireless headset.
Score components:
  • 10% Bluetooth
  • 33% Wired
  • 10% Base/Dock
  • 22% Wireless Range
  • 25% Latency

These truly wireless Bluetooth headphones can be quite confusing to use at first, as you always need to power and pair the right earbud first. Then, you can connect the left one to the right one. Unfortunately, if you don’t do it in that order, audio channels are going to be switched around. They also have higher than average latency for Bluetooth headphones and won’t be suitable for videos and gaming. On the upside, they have amazing wireless range, and you shouldn’t have too many audio cuts.

6.0 Bluetooth
What it is: Bluetooth support for wireless headphones.
When it matters: To connect wirelessly to Bluetooth sources like your phone, tablet, console, PC and TV.
Score components:
  • 80% Multi-Device Pairing
  • 20% NFC
  • <1% PS4 Compatible
  • <1% Xbox One Compatible
Bluetooth Version : 4.2+EDR
Multi-Device Pairing
What it is: A Bluetooth profile that allows some headphones to be simultaneously connected to multiple Bluetooth sources, and have full call and media support on both/all devices they are connected to.
When it matters: To quickly switch between your Bluetooth sources. For example, switching from your phone to your home or work PC and still have call and media support on both devices.
Good value: 2 devices.
:
No
NFC
What it is: Near Field Communication technology that allows you to quickly, pair your headphones with your Bluetooth and NFC-enabled device.
When it matters: This makes pairing with an NFC-enabled device a lot easier than the typical and often tedious hold-to-pair procedure that most wireless headphones have.
Good value: Yes
:
No
PS4 Compatible
What it is: Bluetooth compatibility with the PlayStation 4.
When it matters: To connect your headphones wirelessly with your PS4.
Good value: Audio + Microphone
:
No
Xbox One Compatible
What it is: Bluetooth compatibility with the Xbox One.
When it matters: To connect your headphones wirelessly with your Xbox one.
Good value: Audio + Microphone
:
No

These headphones do not have multi-device pairing or NFC support. Their pairing procedure is also a bit complicated as you always need to power up the right earbud first, which connects to your device and then connect the left earbud to the right one. If you connect the left one first, channels will be inverted. However, you can connect each earbud to two different devices but can’t connect them as a pair to two devices.

0 Wired
What it is: The type and compatibility of audio cables for wired and wireless headphones.
When it matters: For all devices with a regular audio jack (line-out) and also compatibility of the in-line remote/boom microphone with consoles and Personal computers.
Score components:
  • 13% Analog
  • 9% USB
  • 26% PS4 Compatible
  • 26% Xbox One Compatible
  • 26% PC Compatible
Cable Tested : N/A
Analog
What it is: A regular 1/8" TRS audio jack or a 1/4 or 1/16 TRS with a 1/8 TRS adapter.
When it matters: For all devices with a line out.
Good value: Yes
:
N/A
USB
What it is: A USB or USB adapter to connect to your devices for audio and microphone.
When it matters: A digital USB adapter usually offers a slight advantages over a regular audio jack, like a DAC, and amplifier module or software support and compatibility with PCs. However it may not be as compatible with consoles.
Good value: Yes
:
N/A
PS4 Compatible
What it is: PS4 compatibility with a regular 3 or 4 pin 1/8 TRS audio cable.
When it matters: When you want to use a wired headphone with your PS4 controller.
Good value: Audio + Microphone
:
N/A
Xbox One Compatible
What it is: Xbox One compatibility with a regular 3 or 4 pin 1/8 TRS audio cable.
When it matters: When you want to use a wired headphone with your Xbox One controller.
Good value: Audio + Microphone
:
N/A
PC Compatible
What it is: PC compatibility with a regular 3 or 4 pin 1/8 TRS audio cable.
When it matters: When you want to use a wired headphone with your PC.
Good value: Audio + Microphone
:
N/A

The xFyro xS2 are truly wireless headphones that do not have any wired connection.

2.1 Base/Dock
What it is: The base station, dock or dongle transmitter of wireless headphones that receive data/audio via a proprietary frequency range.
When it matters: Knowing the inputs and outputs of the base/dock/dongle as well as its compatibility with consoles and Personal Computers. Also whether the base supports dock charging to easily recharge the headphones without any cables.
Score components:
  • 5% Optical Input
  • 22% Line In
  • 5% Line Out
  • 22% USB Input
  • 4% RCA Input
  • 9% PS4 Compatible
  • 9% Xbox One Compatible
  • 9% PC Compatible
  • 2% Power Supply
  • 13% Dock Charging
Wireless Type
What it is: The type of wireless connection used by the base station/dock to communicate with the headphones.
When it matters: For latency and range. For example Radio frequency has low latency but mediocre range when obstructed and proprietary docks have their own 2.x GHz or 5 GHz frequency which varies in performance.
:
N/A
Optical Input
What it is: Optical input for audio.
When it matters: Optical can carry a bit more data at faster speeds than typical wired connection which allows for more high quality, lossless audio.
Good value: Yes
:
No
Line In
What it is: The regular wired input via a 1/8" TRS audio jack.
When it matters: For any device that has a line out for audio transmission.
Good value: Yes
:
No
Line Out
What it is: A regular 1/8TRS audio jack output.
When it matters: If you need to share the audio source with other devices. A line out lets you connect other headphones or speakers to the dock/base station.
Good value: Yes
:
No
USB Input
What it is: A digital USB input instead of a typical 1/8 TRS line-in.
When it matters: A USB connection can provide both an audio input and power to the Dock or Base station.
:
No
RCA Input
What it is: Audio input using via an RCA connectors.
When it matters: Provides better stereo audio to the dock/base that's then transmitted to the headphones.
Good value: Yes
:
No
PS4 Compatible
What it is: Dock/Base station compatibility with the PlayStation 4.
When it matters: To be able to use all the features of the dock/base station with out losing audio or microphone capability.
Good value: Audio + Microphone
:
N/A
Xbox One Compatible
What it is: Dock/Base station compatibility with the Xbox One.
When it matters: To be able to use all the features of the dock/base station with out losing audio or microphone capability.
:
N/A
PC Compatible
What it is: Dock/Base station compatibility with your Personal Computer.
When it matters: To be able to use all the features of the dock/base station with out losing audio or microphone capability.
Good value: Audio + Microphone
:
N/A
Power Supply
What it is: The connector type of the power source.
When it matters: The accessibility of the power source. For example a power supply with USB/USB-C connects to multiple devices, PC , PS4, Xbox One or even with your regular phone charger whereas a A/C adapter is less common.
Good value: USB/USB-C
:
USB
Dock Charging
What it is: Charging the headphones via the dock/base station instead of a charging cable.
When it matters: It makes charging your headphones easier and gives you a sport to store your headphones when they are not in use.
Good value: Yes
:
Yes

They have a charging case that delivers up to 30 hours of extra battery life according to the specs sheet. However, it has no inputs.

9.5 Wireless Range
What it is: Headphones that offer a cable-free listening experience over a wireless network, typically via Bluetooth or radio frequency.
When it matters: If you don't want to be limited by the length of an audio cable. This means having the freedom to move around in your home or office with a much greater range than an audio cable could provide, especially, if the Bluetooth source is heavy or difficult to carry. Note that wireless range also depends on your Bluetooth sources' signal strength which may vary from device to device or depending on your phone model.
Score components:
Obstructed Range
What it is: The range that the wireless headphones can reach before dropping any audio when the Bluetooth source was placed in another room. We test our obstructed range with a Moto E4 Plus. Results may vary depending on your phone model or Bluetooth source.
When it matters: If you can't or prefer not to carry your Bluetooth source on you, while listening to your audio in an indoor environment. Although, the obstructed wireless range will slightly depend on your home or office layout. Note that wireless range also depends on your Bluetooth sources' signal strength which may vary from device to device or depending on your phone model.
Good value: >35ft
Noticeable difference: 5ft
:
60 ft
Line of Sight Range
What it is: The range that the wireless headphones can reach before dropping any audio when in direct line of sight of the Bluetooth device.
When it matters: If you can't or prefer not to carry your Bluetooth source on you, while listening to your audio in a large and open environment.
Good value: 170ft or more
Noticeable difference: 10ft
:
199 ft

These headphones have excellent wireless range. With 60ft of obstructed range, you’ll be able to walk around a small apartment or office without gearing too many audio cuts. You shouldn’t have any problem especially if you keep your audio source on you.

0 Latency
What it is: How long it takes for audio to play through your headphones once the audio signal has been sent from a source.
When it matters: When gaming or watching movies. High latency means you will hear the audio much later than the images you see on screen.
Score components:
Default Latency
What it is: The Base RF latency or the default sub-band coding (SBC) of most Bluetooth headphones.
When it matters: When watching videos a high latency can cause sync issues between the images you see and the audio you hear.
Good value: 50ms or less
Noticeable difference: 15ms
:
326 ms
aptX Latency
What it is: An audio coding algorithm (Codec) that improves bit rate efficiency. It reduces latency and improves sound quality over Bluetooth.
When it matters: For better sound quality if your often streaming music over Bluetooth. Also it slightly improves latency when watching videos with wireless headphones.
Good value: 50ms or less
Noticeable difference: 15ms
:
N/A
aptX(LL) Latency
What it is: Low latency variation of aptX that significantly reduces sync issues between video and sound when using Bluetooth headphones.
When it matters: When watching videos or gaming latency is a lot more noticeable than just listening to music.
Good value: 50ms or less
Noticeable difference: 5ms
:
N/A

Like most Bluetooth headphones without any lower latency codec, these headphones have too much latency to be used for watching video content or gaming. Also, they even have higher-than-average latency and what you will hear won’t match what you see on your screen.

In the box

XFYRO xS2 Truly Wireless In the box Picture

  • xFyro xS2 headphones
  • Charging case
  • 3x tip options
  • Micro-USB charging cable
  • Manuals

Compared to other Headphones

XFYRO xS2 Truly Wireless Compare Picture

The xFyro xS2 are decent mixed usage closed-back in-ears with a few flaws. While they are decently comfortable for in-ears and look good, these headphones are quite disappointing when compared to other headphones in a similar price range. Their sound quality is mediocre, and their battery life is short. On the upside, they have good isolation performance and amazing wireless range. See our recommendations for the best earbuds, the best earbuds with a mic, and the best wireless earbuds.

Jabra Elite 65t Truly Wireless

The Jabra Elite 65t are better headphones than the XFYRO xS2. They are better-built and also have better audio reproduction, longer battery life, and also have a companion app with customization options. They also have a better control scheme and can connect to two devices simultaneously. On the other hand, the XFYRO xS2 have amazing wireless range and their case acts as a powerbank for other devices as well. They are also slightly more comfortable.

Apple AirPods 1 Truly Wireless 2017

The XFYRO xS2 are more versatile headphones than the Apple AirPods. They have better isolation due to their closed-back design, which makes them a better choice for commuting and to use at the office. They also barely leak, have great wireless range, and aren’t exclusive to Apple products. On the other hand, the AirPods have significantly better build quality and have one of the best cases we’ve tested so far. They also have better battery life, but they lack a lot of bass.

Jaybird Run Truly Wireless

The Jaybird Run are better headphones than the XFYRO xS2. They have a more comfortable and better-built design. They also have a sound profile that follows our neutral target curve better and they also have a companion app that lets you EQ them to your preference. Their stability fins are also very useful for more intense sports and the headphones won’t come out of your ears. However, the XFYRO have better wireless range and better isolation performance, which make them a decent option for commuting.

JBL Free Truly Wireless

The JBL Free are better headphones than the XFYRO xS2. They outperform the XFYRO in pretty much every category. They are more comfortable, are better built, and they have great audio reproduction. Both headphones have short battery life, but the XFYRO have better wireless range and you can also use their case to charge up other devices, which can be useful.

Altec Lansing True Evo Truly Wireless

The XFYRO xS2 are better truly wireless headphones than the Altec Lansing True Evo. They are a bit more versatile thanks to their better isolation performance, which can be useful while commuting and at the office. They also have better wireless range and take less time to charge, for about the same battery life. On the other hand, the True Evo feel better-built, and some may prefer a design with stability fins for sports.

+ Show more

Conclusion

6.7Mixed Usage
What it is: This is the combination of the different use cases to evaluate how versatile the headphones are. Therefore an everyday headphone should be well-rounded enough to adapt to most situations and environments without significant losses in sound quality, design ergonomics or isolation.
Score components:
Decent mixed usage headphones. They won’t have a great audio reproduction necessary for critical listening, but their portable design and good isolation performance make them an above-average choice for commuting and to use at the office. They are also stable enough for light sports activities, and their in-ear design won’t trap heat. However, they have higher-than-average Bluetooth latency and will not be suitable for gaming and watching TV.
6.5Critical Listening
What it is: The level of audio fidelity a headphone can reproduce. Therefore a balanced and true representation of bass, mids, treble, soundstage and imaging, as well as a comfortable listening experience, is essential for critical listening.
Score components:
Average for critical listening. These headphones have a mediocre sound quality with a lack of low bass and overemphasized high-bass and low-mid. Resulting in a boomy and cluttered mix, especially on vocals and lead instruments. Their treble range is also uneven, and some leads lack detail while some sibilances are overemphasized. Our unit also had a frequency response mismatch between the two drivers.
7.3Commute/Travel
What it is: How well the headphones handle the loud environments involved in commuting or traveling. Therefore your listening experience should be comfortable, hassle-free and as isolated from noise as possible.
Score components:
Above-average for commuting and traveling. They have good isolation performance, and they practically don’t leak so you’ll be able to raise your listening volume at high levels without bothering people surrounding you. They might be comfortable enough for short bus trips, but the in-ear fit might not be ideal for long flights.
7.8Sports/Fitness
What it is: How well-adapted the headphones are, to use while doing sports or strenuous exercise. Therefore the headphones should not be too cumbersome and deliver a stable and comfortable listening experience.
Score components:
Good for sports. Their small and portable design makes them suitable for this use case. They are also truly wireless which gets rid of the risk to have a cable in your way or getting stuck on something. Like most in-ears, they are breathable and are stable enough for light physical activity. Those training in crowded gyms will appreciate their decent seal and isolation performance.
7.1Office
What it is: How well the headphones can deliver a comfortable and isolated listening experience in an office-like environment. They should not leak much and should block the noise of a busy office.
Score components:
Decent for the office. They isolate a good amount of noise and block ambient chatter well. They also barely leak so you’ll be able to enjoy your music at high volumes without disturbing surrounding colleagues. On the downside, the in-ear fit might not comfortable enough for a full work day and their short battery life will require you to charge them during the day.
5.4TV
Score components:
Poor for TV. These headphones have mediocre sound, and their latency is too high to be suitable for watching TV as what you hear will not be in sync with what you see.
4.4Gaming
Score components:
Bad for gaming. The xFyro xS2 have mediocre sound quality and have a sub-par microphone for online gaming. Also, their latency is too high to be suitable for gaming. They are also not compatible with consoles, and their battery life will be to short for long gaming sessions.

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