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Reviewed on Aug 15, 2018 , Marc Henney

Sennheiser HD1 Over-Ear / Momentum 2.0
HEADPHONES REVIEW

Usage Ratings - Version 1.2

Test Benches: test

  • 1.2: Winter 2018
  • 1.1: Summer 2017
  • 1.0: Winter 2017
  • 0.9: Winter 2016
6.4
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:
7.1
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:
6.0
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:
6.1
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:
6.1
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:
5.8
Home Theater
Score components:
6.5
Gaming
Score components:
Type : Over-ear
Enclosure : Closed-Back
Wireless : No
Noise-Cancelling : No
Mic : Yes
Transducer : Dynamic

The Sennheiser HD1 Over-Ear are average headphones for most use cases with a decently well-balanced sound. They're a great-looking and well-built pair of wired over-ears with a good bass, low leakage and easy to use controls. Unfortunately, they're not the most comfortable over-ears that we've tested. They also tend to sound a bit dark overall due to their recessed treble range. They also won't be as practical as the noise cancelling and wireless HD1 .

Test Results
Design 7.1
Sound 7.0
Isolation 6.3
Microphone 6.2
Active Features 0
Connectivity 5.3
Pros
  • Great audio reproduction.
  • Sturdy and durable design.
  • Minimal sound leakage.
Cons
  • Poor isolation.
  • Lacking comfortable padding.
Update 2/16/2018: Converted to Test Bench 1.2.
Update 10/2/2017: The microphone has been tested with our new methodology, as explained here
Update 8/10/2017: Converted to Test Bench 1.1. Learn more about our new versioned test bench system here.

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7.1

Design

Score components:
Sennheiser Momentum 2.0 Design Picture

The Sennheiser HD1 Over-Ear (Momentum 2.0 wired) are well-made, and stylish-looking headphones with a sturdy and durable build quality. The metal frame is solid enough to not warp easily under physical stress and the dense ear cups are able to withstand a few accidental drops without getting damaged. They offer a good control scheme thanks to their in-line remote and they're moderately comfortable although the lack of padding on the headband and slight stiffness in the ear cup padding lessens comfort level over-all. They're also not the most stable or breathable headphones for sports but should be fine for most casual activities.

Style
Sennheiser Momentum 2.0 Design Picture 2

The Sennheiser HD1 Over-Ear have an old-school look that's visually appealing and feels high-end. The oval ear cups are dark gray with a matte finish accentuated by the black padding on the ear cups and the faux leather finish of the headband. Other color options are available that stand out a bit more than the matte gray finish but the design and understated retro look should work for most, although they won't be the most eye-catching headset out there for the fashion-forward listener.

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
Sennheiser Momentum 2.0 Comfort Picture
Weight : 0.6 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.
:
0.7 lbs

The HD1's over-ear cups are decently sized and encompass most ears well. They do not apply too much tension to the head, which makes them comfortable to listen to for long sessions. Unfortunately, they lack padding on the headband and the padding used for the ear cups could be softer. It's slightly stiff and may be uncomfortable for some.

7.2 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.
Sennheiser Momentum 2.0 Controls Picture
Ease of use : Average
Feedback : Good
Call/Music Control : Yes
Volume Control : Yes
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 button layout and functionality of the HD1 is above average, offering well-defined inline controls for call/music, track skipping and volume. They don't have any additional features but what is present is efficient and easy to use, as long as you get the corresponding inline control for either Apple or Android.

6.4 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:
Sennheiser Momentum 2.0 Breathability After Picture
Avg.Temp.Difference : 5.7 C

The Sennheiser HD1 Over-Ear are not the most breathable headphones. They create a fairly decent seal around your ears and have thick pleather padding that obstructs quite a bit of airflow. They won't be the ideal headphones to take to the gym or for more intense workouts.

6.1 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:
Sennheiser Momentum 2.0 Portability Picture
L : 4.72 "
W : 6.5 "
H : 2.95 "
Volume : 90.68 Cu. Inches
Stand required : N/A

The Sennheiser Momentum 2.0 are decently portable. They are mid-size over-ear headphones that also fold up to occupy less space in your bag. They should easily fit into a backpack or gym bag, but won't be as potable as the HD1 On-Ear and will be a bit cumbersome to carry around on your person, if you're not wearing them, like most over-ears.

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
Sennheiser Momentum 2.0 Case Picture
Type : Soft case
L : 6.5 "
W : 7.68 "
H : 2.36 "
Volume : 117.8 Cu. Inches

The Sennheiser HD1 Over-Ear, like the Momentum 2.0 on-ear and the HD1 Wireless model, have the same soft case that will protect the headphones from scratches and will fit all the gear that is provided with headphone. Sadly, it will not protect the headphones from hard falls.

8.0 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
Sennheiser Momentum 2.0 Build Quality Picture

The Sennheiser Momentum 2.0 have great build quality. The metal frame feels sturdy, durable, and able to withstand a fair amount of physical stress. The ear cups are also well made and the few joints present on the design are smooth and hold in place once adjusted by the listener.

6.5 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
Sennheiser Momentum 2.0 Stability Picture

The Sennheiser HD1 Over-Ear are decently stable. They easily maintain their position during casual listening sessions. However, they are not designed for sports. The ear cups will sway and slip off your ears during high-intensity activities like running and jumping. Their audio cable is detachable but can be locked into the ear cups. This means, that if the cable is locked and gets hooked by something in your environment, the headphones will be pulled off your head, unlike the wireless model.

Cable
Sennheiser Momentum 2.0 Cable Picture
Detachable : Yes
Length : 4.49 ft
Connection : 1/8" TRRS

These headphones come with a 1/8" TRRS-TRRS cable with inline controls.

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Headshots 1
Headshots 2
7.0

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.)
Sennheiser Momentum 2.0 Frequency Response

The Sennheiser HD1 Over-Ear are a decent sounding pair of closed-back over-ear headphones. They have an extended and powerful bass, an even and balanced mid-range, but a poor treble. Additionally, their bass delivery could vary noticeably from person to person, their mid-range is a bit forward sounding, and their treble lacks a lot of presence. Overall their bass and mid-range are rather overpowering, which makes them suitable for fans of heavy bass, but due to their lacking treble, they won't be the ideal choice for vocal-centric music. Also, like most other closed-back headphones, they don't have a large and speaker-like soundstage.

8.1 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:
Sennheiser Momentum 2.0 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
:
2.76 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
:
10 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
:
3.5 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
:
3.21 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
:
2.23 dB

The Sennheiser HD1 Over-Ear have a very good bass. LFE (low-frequency extension) is at 10Hz, which is excellent. Low-bass, which is responsible for the thump and rumble common to bass-heavy tracks is over our neutral target by about 3.5dB. This means that these headphones have a deep and extended bass with a hyped thump, which will be pleasing to the fans of heavy bass. Mid-bass, responsible for the body of bass guitars and the punch of kick drums, is flat but overemphasized by more than 3dB. High-bass, responsible for warmth, is also flat and hyped by more than 2dB. Overall the bass of the Momentum 2.0 is deep, extended, and heavy, but slightly overemphasized and could sound slightly boomy.

8.5 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:
Sennheiser Momentum 2.0 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
:
2.06 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
:
1.51 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
:
2.45 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
:
1.61 dB

The mid-range performance of the Momentum 2.0 is great. The overall response is balanced and even, but the broad 3dB overemphasis centered around 500Hz makes the overall sound of these headphones a bit forward and boxy. This will mostly affect vocals and lead instruments.

5.3 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:
Sennheiser Momentum 2.0 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
:
5.62 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
:
-3.13 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
:
-6.01 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
:
-6.53 dB

The treble performance is sub-par. The overall response is rather inconsistent and quite underemphasized. The dips centered around 4KHz and 7KHz, which actually correspond to the spikes in their THD, negatively affect the detail and presence of their reproduction, which will be mostly noticed on vocals, lead instruments and cymbals.

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.
Score components:
6.7 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:
Sennheiser Momentum 2.0 Consistency L Sennheiser Momentum 2.0 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
:
0.69 dB

The frequency response consistency of the Sennheiser Momentum 2 is about average. In the bass range, we measured about 5dB of deviation at 60Hz across our human subjects. This is significant and noticeable. In the treble range, the delivery is more consistent and the deviations happen in narrower bands. This is probably due to the relatively small size of the ear cups.

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.
Sennheiser Momentum 2.0 Group Delay Sennheiser Momentum 2.0 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
:
0.18
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
:
1.26
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
:
2.2
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
:
4.36

The imaging performance is great. Weighted group delay is at 0.18, which is quite good. The GD graph also shows that the group delay response is almost entirely below the audibility threshold. This ensures a tight bass and transparent treble reproduction. Additionally, the L/R drivers of our test unit were exceptionally well-matched in amplitude, frequency, and phase response. This is important for the accurate placement and localization of objects (vocals, instruments, video games effects) in the stereo field.

5.1 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.
Sennheiser Momentum 2.0 PRTF
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
:
3.89 dB
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
:
-0.79 dB
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
:
16.32 dB
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
:
4.3
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
:
2.7
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
:
-0.1 dB

The soundstage is sub-par. Due to their closed-back design and small ear cups, the soundstage of the HD1 Over-Ear will be perceived as small and located inside the listener's head. The PRTF graph also shows that the pinna interaction/activation is low and not very accurate.

8.1 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:
Sennheiser Momentum 2.0 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
:
0.402
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
:
1.756

The harmonic distortion performance of the Sennheiser Momentum 2.0 is very good. The overall amount of harmonic distortion is quite low, especially in the mid-range. There isn't a big rise in THD under heavier loads either. However, the spike in THD around 4KHz could make the sound of the region a bit harsh and impure.

6.3

Isolation

Score components:

The Sennheiser Momentum 2.0 isolate passively, unlike the HD1 Wireless, which have active noise cancellation and do much better in noisy environments. The oval ear cups seal the ears fairly well, so they do not leak much and block a decent amount of high-frequency noise.  Unfortunately, it won't be enough for most commutes and loud environments and will let most of the low-frequency noise of a plane or train seep into your audio. On the upside, since they do not leak much, you can mask a bit more ambient noise by playing your music at higher volumes.

5.7 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:
Sennheiser Momentum 2.0 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
:
-12.35 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
:
0.31 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
:
-9.28 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
:
-28.86 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
:
0 dB

The isolation performance of the Sennheiser Momentum 2 is mediocre. Unlike the HD1 Wireless, the wired version of HD1 doesn't have active noise canceling and therefore, don't provide any isolation in the bass range. This means they will let in all the low rumbling noise of airplane and bus engines. In the mid-range, important for blocking out speech, they achieve 11dB of isolation which is decent. In the treble range, occupied by sharp sounds like S and Ts, they isolate by more than 35, which is very good.

7.6 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:
Sennheiser Momentum 2.0 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 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
:
36.25 dB

The leakage performance of the HD1 is good. The significant portion of their leakage is concentrated in the mid-range between 400Hz and 1KHz. Therefore, their leakage will sound less bright than that most headphones, especially open-back ones. The overall level of their leakage is not loud either. With the music at 100dB SPL, their leakage at 1 foot away averages at 36dB SPL and peaks at 47dB SPL which is a bit lower than the noise floor of an average office.

6.2

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
:
No
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
:
Yes
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 in-line microphone of the Sennheiser HD1 Over-Ear is mediocre. In quiet environments, speech recorded or transmitted with this mic will be noticeably thin and lack a bit of detail. But it will be quite intelligible and open sounding. In noisy situations, it will struggle to fully separate speech from background noise even in moderately loud places, like a busy street.

6.7 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:
Sennheiser Momentum 2.0 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
:
479.46 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
:
3.82 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
:
19611.72 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
:
2.193
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
:
23.44 dB

The microphone of the HD1 has an average recording quality. LFE (low-frequency extension) is at 479Hz, which is results in recorded/transmitted speech to be noticeably thin. However, the HFE (high-frequency extension) is at 20KHz, indicating an open and airy sound. The dip around 7KHz though, negatively affects the detail and brightness of speech, but it won't have a noticeable effect on the intelligibility of speech.

5.7 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:
Sennheiser Momentum 2.0 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
:
8.22 dB

The noise handling of the Momentum 2.0's microphone is sub-par. In our SpNR test, it achieved a speech-to-noise ratio 8dB indicating it is best suited for quiet environments and they would struggle to fully separate speech from ambient noise even in moderately loud situations. This is typical of most in-line microphones and is due to the relatively long distance between the microphone and the mouth.

0

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 Sennheiser HD1 Over-Ear have no active features and therefore do not require a battery. They also do not have a dedicated app or software for added customization options.

N/A 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.
:
N/A
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
:
N/A
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
:
N/A
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.
:
N/A
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 your relatively close to a power source. However, this means wireless headphones will need a wired connection to the power source during the charging process.
:
N/A
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.
:
N/A

These are passive headphones with no active components and no battery.

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

The Sennheiser Momentum 2.0 are not compatible with the Sennheiser Captune app.

5.3

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

The Sennheiser HD1 Over-Ear only have a wired connection. They have practically no latency for watching movies and videos but do not have the convenient range of a wireless headphone. On the upside, their audio cable does come with an in-line remote and mic that will work with your PS4 controller but not with the Xbox since the cable is IOS specific.

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 : N/A
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.
:
N/A
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
:
N/A
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
:
N/A
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
:
N/A

The HD1 Over-Ear are wired and do not have a Bluetooth connection. If you want a good Bluetooth headset for more casual use, check out the Plantronics BackBeat Pro 2.

8.5 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 : iOS
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
:
Yes
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
:
No
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
Good value: Audio + Microphone
:
Audio + Microphone
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
Good value: Audio + Microphone
:
Audio Only
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
:
Audio + Microphone

These headphones come with a 1/8" TRRS audio cable with an in-line microphone that's compatible with the, PS4 and iOS devices but not the Xbox One. They will only provide audio when connected to your Xbox controller and will need a headset adapter or a compatible headphone jack to provide microphone support with your PC or tablet.

0 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
:
N/A
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
:
N/A
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
:
N/A
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.
:
N/A
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
:
N/A
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
:
N/A
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
:
N/A

These headphones do not have a base/dock. If you want a versatile headset with a base that you can also use wired check out the SteelSeries Arctis 7 by SteelSeries.

0 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.
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.
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.
Good value: >35ft
Noticeable difference: 5ft
:
N/A
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
:
N/A

These headphones do not have a wireless range since they're wired. If you want a good wireless headset for critical listening, consider the Sennheiser PXC 550 Wireless.

10 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
:
0 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

The Sennheiser Momentum 2 do not have a wireless range since they're wired. If you want a good wireless headset for critical listening, consider the Bose QuietComfort 35 II.

In the box

Sennheiser Momentum 2.0 In the box Picture

  • Sennheiser HD1 Over-Ear Headphones
  • Audio cable
  • Carrying case
  • Carrying pouch
  • Manual

Compared to other Headphones

Sennheiser Momentum 2.0 Compare Picture

The Sennheiser HD1 Over-Ear are stylish, well-crafted headphones with a sturdy and durable build quality. They sound decent with most music genres, delivering a powerful bass and a well-balanced midrange but a slightly recessed treble that makes them sound slightly dark overall. They're a bit stiff on the head, which won't be as comfortable as some of the headphones they are often compared to from other brands like Bose. They're also not noise canceling like the HD1 wireless so they do worse in loud environments but on the upside, they barely leak so you can mask some of the ambient noise that seeps into your audio by playing your music a little louder.

Bose QuietComfort 35 II

The Bose QuietComfort 35 II are a much better headphone than the Sennheiser HD1 Over-Ear. However, since the Bose are wireless and noise canceling, they're not really comparable to the Sennheisers. The QC35 II are a lot more suitable for commuting and traveling than the HD1 Over-Ear since they have better noise isolation thanks to their ANC feature. They also have a more range than the HD1, and they sound better with a more balanced representation of the treble range than the Sennheisers. The Bose are also a lot more comfortable too. On the other hand, since the HD1 are wired, they have no latency when watching videos. However, you can also use the Bose with the provided audio cable for the same use case.

Sony MDR-1A

The Sony MDR-1A are a slightly better headphone than the Sennheiser HD1 Over-Ear. The Sonys have a much more comfortable over-ear fit than the Sennheiser. They're also a bit better built with durable materials that are a lot lighter than the HD1's build quality. They also have a better sound quality that's more balanced with the higher frequencies and does not sound as dark. On the upside, the HD1 over-ear leak a lot less which make them a bit more suitable for noise sensitive environments like the office.

Oppo PM-3

The Oppo PM-3 are a better headset overall than the Sennheiser HD1 over-ear. The Oppos have a better build quality and a more comfortable over-ear fit that most will prefer over the HD1. They also sound a bit better balanced in the bass mid and treble ranges although the Oppos do tend to sound a bit sharp at times. This means that some people may prefer the darker sound of the HD1 Over-ear. The HD1 also have a slightly more compact and portable design thanks to the folding joints and their iOS specific audio cable has mic support with the PS4 controller, unlike the Oppo's.

Sony WH-1000XM2

The Sony WH-1000XM2 are a much better headphone than the Sennheiser HD1 Over-Ear, but they're also wireless and noise canceling which is not as comparable. The WH-1000XM2 are more suitable for commuting and traveling than the HD1 Over-Ear since they are noise canceling and the HD1 are not. The Sonys also have a lot more features like a customizable EQ, codec options, and room effects. On the other hand, since the HD1 over-ear are wired, they have no latency when watching videos.

Conclusion
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6.4Mixed 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:
The Sennheiser HD1 Over-Ear are decent everyday headphones. They're passive and won't be as versatile as the noise-canceling wireless version, but they have a good sound and a sturdy, durable design. They also do not leak much which makes them a bit more suitable for use in quieter conditions like being at the office. Unfortunately, they're not the most comfortable, stable or breathable over-ears for sports and really long listening sessions.
7.1Critical 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:
Above-average for critical listening. They have a decent sound quality but a poor soundstage due to their closed back design. They also sound a bit dark overall because of their slightly recessed treble range, but on the upside, they should be fine for most casual listeners and pack enough bass, with a sufficiently balanced mid-range to sound good enough with most genres and tracks.
6.0Commute/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:
Average-at-best for commuting. They have a decent control scheme, and they're moderately comfortable, but the noise isolation is too weak for noisy commutes. They're also a bit bulky and won't be the most comfortable headphones to wear on really long trips.
6.1Sports/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:
Average for sports use. They're comfortable and have a good control scheme, but they're unstable for intense exercises. They're also not very breathable, so they will make you sweat more than usual if you use them for your workouts and for running.
6.1Office
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:
Average for office use. They do not isolate well enough for a noisy office environment but on the upside, they also do not leak much so you can play your music at higher volumes to mask some of the noise without distracting your colleagues.
5.8Home Theater
Score components:
Below-average for home theater use. They have a decent sound and no latency since they're wired, unlike the Momentum 2.0 wireless. However, they have a relatively short audio cable that won't be ideal for comfortably watching movies from your couch.
6.5Gaming
Score components:
Average for gaming. The Sennheiser Momentum 2.0 have a decent sound and a low latency wired connection, but are not as convenient or as customizable as most wireless gaming headsets. They also have a mediocre at best microphone and an iOS specific audio cable that is only compatible with the PS4 controller and not the Xbox one.

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