- Table of Contents
- Intro
- Design
- Sound
- Isolation
- Microphone
- Active Features
- Connectivity
- In the box
- Compared
- Conclusion
- Discussions
Reviewed on Feb 21, 2019
By Marc Henney
, Sam Vafaei, Simon Barbier, Jean-Simon Bonneterre, Yannick Khong
Stax SR-L300
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
5.2
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:
- 25% Critical Listening
- 25% Office
- 25% Commute/Travel
- 10% Sports/Fitness
- 9% Gaming
- 6% TV
Score distribution:
7.7
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:
- 80% Sound
- 10% Build Quality
- 7% Comfort
- 3% Breathability
Score distribution:
3.5
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:
- 24% Noise Isolation
- 14% Sound
- 11% Portability
- 10% Comfort
- 9% Build Quality
- 9% Battery
- 6% Wireless Range
- 4% Controls
- 4% Breathability
- 4% Leakage
- 3% Microphone
- 1% Multi-Device Pairing
- 1% NFC Pairing
Score distribution:
4.1
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:
- 24% Stability
- 23% Portability
- 11% Sound
- 10% Breathability
- 8% Comfort
- 6% Wireless Range
- 5% Controls
- 5% Battery
- 4% Noise Isolation
- 4% Leakage
Score distribution:
4.7
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:
- 24% Comfort
- 21% Sound
- 16% Noise Isolation
- 8% Leakage
- 7% Battery
- 7% Wireless Range
- 5% Breathability
- 4% Build Quality
- 4% Microphone
- 2% Controls
- <1% Multi-Device Pairing
- <1% USB Audio
- <1% PC Compatible
- <1% Latency
- <1% Analog Audio
- <1% Line In
- <1% USB Input
- <1% PC Compatible
- <1% Power Supply
- <1% Dock Charging
Score distribution:
5.7
TV
Score components:
- 22% Sound
- 17% Comfort
- 15% Default Latency
- 10% Wireless Range
- 5% Breathability
- 5% Build Quality
- 4% Optical Input
- 3% Battery
- 3% Analog Audio
- 3% Leakage
- 2% Noise Isolation
- 2% RCA Input
- 2% Multi-Device Pairing
- 2% Line In
- 2% Line Out
- 2% Power Supply
- 1% Dock Charging
Score distribution:
5.7
Gaming
Score components:
- 20% Sound
- 20% Default Latency
- 15% Comfort
- 12% Microphone
- 5% Breathability
- 5% Battery
- 5% Base/Dock
- 3% Build Quality
- 3% Wireless Range
- 3% Microphone Control
- 2% Channel Mixing
- 2% Wired
- 2% Volume Control
- 2% App Support
- 1% Bluetooth
Score distribution:
The Stax SR-L300 are very good critical listening, open-back, electrostatic headphones with a unique look. They have wide rectangular ear cups with a grill design that give them a retro feel. They have great audio reproduction for classical and vocal-centric music and are fairly comfortable. However, their build is very plasticky and they feel like they could break easily, especially the grills. They also don’t allow much airflow and get quite warm for open-back headphones. You need a specialized amp or energizer to drive them and enjoy their great sound.
- Great audio reproduction.
- Comfortable design.
- Cheap and flimsy build.
- Bulky design.
- Need a specialized amplifier and energizer.
Check Price
SR-L300
SEE PRICE
Amazon.com
Design
Score components:
- 28% Comfort
- 5% Controls
- 10% Breathability
- 12% Portability
- 4% Case
- 29% Build Quality
- 12% Stability
Score distribution:
The Stax SR-L300 have an out-of-the-ordinary design and look like retro headphones due to their large and flat rectangular ear cups. The back of the cups are opened with a grill design. They are quite comfortable, though some people might feel their ear touch the drivers. On the upside, they are lightweight, but this is due to their plastic build, which makes them less durable and feel quite cheap. There are a lot of parts that feel like they could break fairly easily, which is disappointing for their high-end price tag. They also need a specialized amp or energizer to drive them, so you won't be carrying them around or using them outdoors.
The Stax SR-L300 have a retro look with big rectangular ear cups. The cups are also covered by an open, grilled design. The band holding the cups together is very wide, and you have a small strap that serves as a headband. Unfortunately, they look better than they feel once you take a closer look; the cups are made out of cheap-feeling and thin plastic. Their cable is also very large, heavy, and cumbersome.
7.5
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
Score distribution:
Clamping Force
:
1.2 lbs
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.
While the padding on the cups isn’t very thick, the SR-L300 are comfortable headphones. They don’t apply too much pressure on your head, and the strap keeps everything stable enough for casual listening. However, the cups are fairly shallow, and some people could feel their ear touching the drivers, which is quite uncomfortable. On the upside, they are quite lightweight due to their plastic build, and they feel more comfortable than they look.
0
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.
Score components:
- 21% Ease of use
- 21% Feedback
- 14% Call/Music Control
- 14% Volume Control
- 10% Microphone Control
- 5% Channel Mixing
- 10% Noise Canceling Control
- 5% Talk-Through
Score distribution:
Channel Mixing
:
N/A
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.
Talk-Through
:
N/A
What it is:
A transparency feature that uses the mics of the headphones to let you hear what is doing on around you without removing them.
When it matters:
If you want to be aware of what is going on around you without removing your headphones or while still listening to your audio. This is typically a feature for the noise canceling headphones and passively isolating in-ears that block a lot of noise.
Good value:
Yes or adjustable.
These headphones don’t have an in-line remote or controls on the ear cups.
4.9
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:
- 100% Avg.Temp.Difference
Score distribution:
Surprisingly, for open-back headphones, the Stax SR-L300 are not very breathable. They trap quite a lot of heat under the ear cups, and you will feel a difference in temperature while wearing them. These are obviously not suited for sports, as you will even feel your ears getting warmer during casual listening sessions.
1.1
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:
- 20% Volume
- 80% Transmitter required
Score distribution:
The SR-L300 are not portable headphones. These critical listening headphones require a specialized amplifier/energizer to work. Smartphones and laptops can’t drive these headphones and they are also quite bulky over-ears. These headphones are designed to use at home and should stay in or around the same place.
5.5
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
Score distribution:
The Stax SR-L300 feel very cheap, especially for their price point. Their build is all made out of plastic. The hinges are thin and feel like a slight impact could break them. The grill pattern of the ear cups feels like it would break pretty easily. Also, the size adjustment slider is very flimsy. Overall, the build quality is very disappointing and doesn’t represent their high price tag. However, their all-plastic design choice might be due to their high operating voltage, but we can't confirm this.
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
Score distribution:
The SR-L300 have a decently tight fit, and the large, flat earcups do not lift or wobble much when shaking your head side to side. However, they still slip around a bit when tilting your head forward or backward, and the cables are very cumbersome. You should use these in a stationary position without moving your head too much, or they will fall off. This shouldn't be an issue during listening sessions.
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.)
Score components:
- 21% Bass
- 20% Mid
- 19% Treble
- 5% Frequency Response Consistency
- 9% Imaging
- 20% Soundstage
- 6% Total Harmonic Distortion
Score distribution:
The Stax SR-L300 are great sounding open-back over-ear electrostatic headphones. Their bass is lacking in lower frequencies but is well-balanced otherwise. They have excellent mid and treble ranges which will reproduce vocals, leads, and cymbals accurately. They might be a bit sibilant for some people due to small bumps in the treble range. Overall, these headphones will be an excellent option for classical and vocal-centric music but won’t be great for music genres with a lot of low-bass like hip-hop or EDM.
We measured these headphones through a Schiit Ragnarok amplifier and an iFi iESL Pro energizer. You will need a specialized amp or an energizer to drive them.
6.0
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:
- 90% Std. Err.
- 10% Low-Frequency Extension
Score distribution:
Std. Err.
:
5.36 dB
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
Score distribution:
Low-Frequency Extension
:
59.07 Hz
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
Score distribution:
Low-Bass
:
-11.25 dB
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
Mid-Bass
:
0.24 dB
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
High-Bass
:
0.68 dB
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
The bass range of the SR-L300 is mediocre. The LFE (low-frequency extension) is at 59Hz, which suggests that they won't be able to produce low thump and rumbles. Since lack of low-bass is especially hard to hear on headphones, the overall bass range will be light on thump and rumble, but punchy-enough to be adequate for music that doesn't have a lot of sub-bass (like classical music, music recorded before the 1980s, and podcasts/audiobooks). On the upside, mid and high-bass, responsible for the punch of bass and kick and warmth respectively, are well-balanced and follow our neutral target curve well.
9.3
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:
- 100% Std. Err.
Score distribution:
Std. Err.
:
0.96 dB
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
Score distribution:
Low-Mid
:
0.41 dB
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
Mid-Mid
:
0.69 dB
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
High-Mid
:
1.09 dB
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
The SR-L300 have an excellent mid-range performance. They whole range is flat and is within about 1dB of our target curve, which is great. This will result in accurate reproduction of vocals and lead instruments.
8.9
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:
- 100% Std. Err.
Score distribution:
Std. Err.
:
2.32 dB
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
Score distribution:
Low-Treble
:
-1.15 dB
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
Mid-Treble
:
2.01 dB
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
High-Treble
:
-1.54 dB
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
The treble range of the Stax SR-L300 is also excellent. The range is flat and quite even before 5KHz. However, there’s a small bump at 6.5KHz and an even bigger one at 9KHz which could make sibilances (S and T sounds) around these frequencies a bit sharp and piercing for some people. Not everyone will hear this as sibilant as others.
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.
7.2
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:
- 100% Avg. Std. Deviation
Score distribution:
Avg. Std. Deviation
:
0.57 dB
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
Score distribution:
The Stax SR-L300 have decent frequency response consistency. Their bass delivery varies significantly, but the biggest variations were measured in low-bass, which these headphones already lack. Therefore, these variations shouldn’t be that audible since these frequencies are already missing, to begin with. On the upside, they are decently consistent in their treble delivery under 10KHz across multiple reseats.
8.8
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.
Score components:
Score distribution:
Weighted Group Delay
:
0.41
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
Score distribution:
Weighted Amplitude Mismatch
:
0.02
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
Score distribution:
Weighted Frequency Mismatch
:
1.53
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
Score distribution:
Weighted Phase Mismatch
:
4.2
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
Score distribution:
The imaging performance is great. The weighted group delay is at 0.41, which is within good limits. The GD graph also shows that almost the entire group delay response is below the audibility threshold. This ensures a tight bass and a transparent treble reproduction. Additionally, the L/R drivers of our test unit were very well-matched, which is important for the accurate placement and localization of objects (instruments, voice, footsteps), in the stereo image. However, these results are only valid for our unit, and yours may perform differently.
7.8
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.
Score components:
- 15% PRTF Accuracy (Std. Dev.)
- 15% PRTF Size (Avg.)
- 30% PRTF Distance
- 20% Openness
- 10% Acoustic Space Excitation
- 10% Correlated Crosstalk
Score distribution:
PRTF Accuracy (Std. Dev.)
:
2.09 dB
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
Score distribution:
PRTF Size (Avg.)
:
4.73 dB
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
Score distribution:
PRTF Distance
:
11.0 dB
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
Score distribution:
Openness
:
9.3
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
Acoustic Space Excitation
:
9.1
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
Correlated Crosstalk
:
0.0 dB
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
Score distribution:
The soundstage performance is good. The PRTF graph shows a good amount of accuracy and pinna interaction/activation. However, there is no notch present around 10KHz. This suggests a soundstage that is relatively natural and large but perceived to be located inside the listener's head. Also, because of their very open enclosure, their soundstage will be perceived to be more open than that of closed-back headphones.
8.9
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:
- 50% Weighted THD @ 90
- 50% Weighted THD @ 100
Score distribution:
Weighted THD @ 90
:
0.581
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
Score distribution:
Weighted THD @ 100
:
0.136
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
Score distribution:
The THD performance of the Stax SR-L300 is very good. The amount of THD is a bit elevated in low-bass, which they don't produce, to begin with. However, THD in mid and treble ranges are exceptionally low. Also, there is a drop in distortion at 100dB SPL, which could be due to the flexibility of the drivers under heavier loads.
Isolation
The Stax SR-L300 have poor isolation performance, which is to be expected for open-back critical listening headphones. They're not designed to block ambient noise and therefore are not suitable to be used in loud environments or outdoors. The open ear cups help create a spacious soundstage but also let noise seep into your audio and leak a lot. This means that these headphones are best used in isolation where the leakage level will not be distracting to those around you, and you can take full advantage of the open-back design and good soundstage.
1.9
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:
- 29% Bass
- 29% Mid
- 28% Treble
- 14% Self-Noise
Score distribution:
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
:
-0.21 dB
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
Bass
:
-0.03 dB
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
Score distribution:
Mid
:
1.0 dB
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
Score distribution:
Treble
:
-1.44 dB
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
Score distribution:
Self-Noise
:
0 dB
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
Score distribution:
By design, the Stax SR-L300 don’t achieve any isolation at all. All the low rumbling sounds in the bass range, speech in the mid-range or sharp sounds like S and Ts in the treble range will seep into your audio.
0.9
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:
Score distribution:
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
:
66.61 dB
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
Score distribution:
The SR-L300 leak a lot, but this is to be expected from open-back headphones like these Stax. This means the significant portion of their leakage is spread between 450Hz and 20KHz, which is a very broad range. The overall level of their leakage is quite loud too. With the music at 100dB SPL, their leakage at 1 foot away averages at 67dB SPL and peaks at 88dB SPL.
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:
- 50% Recording Quality
- 50% Noise Handling
Score distribution:
Integrated
:
N/A
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
In-line
:
N/A
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
Boom
:
N/A
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
Detachable Boom
:
N/A
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.
These critical listening headphones don’t have a microphone.
0
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:
- 20% LFE
- 25% FR Std. Dev.
- 30% HFE
- 20% Weighted THD
- 5% Gain
Score distribution:
Recorded Speech
:
N/A
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
:
N/A
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
Score distribution:
FR Std. Dev.
:
N/A
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
Score distribution:
HFE
:
N/A
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
Score distribution:
Weighted THD
:
N/A
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
Score distribution:
Gain
:
N/A
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
Score distribution:
They do not have a microphone.
0
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:
- 100% SpNR
Score distribution:
SpNR
:
N/A
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
Score distribution:
They do not have a microphone.
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:
- 90% Battery
- 10% App Support
Score distribution:
These wired headphones can only be used passively and don’t need a battery for any active features. They also don’t have a dedicated mobile app for 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.
Score components:
- 60% Battery Life
- 25% Charge Time
- 10% Power Saving Feature
- 5% Audio while charging
Score distribution:
Battery Type
:
N/A
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.
Battery Life
:
N/A
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
Score distribution:
Charge Time
:
N/A
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
Score distribution:
Power Saving Feature
:
N/A
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.
Audio while charging
:
N/A
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.
Passive Playback
:
N/A
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.
The Stax SR-L300 don’t have a 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
Score distribution:
Equalizer
:
N/A
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.
ANC control
:
N/A
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.
Room effects
:
N/A
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.
Playback control
:
N/A
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.
There is no dedicated app to enhance your listening experience.
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 distribution:
The Stax SR-L300 are wired headphones that need a special amplifier/energizer to work. They aren’t Bluetooth compatible and don’t have a wireless range. You’ll be limited by the length of their cable. Since they are wired, you also won’t have any latency issues.
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 Pairing
Score distribution:
Bluetooth Version
:
N/A
What it is:
The version of Bluetooth that the headphones support.
When it matters:
Newer versions of Bluetooth, when paired with devices that support the same version, may have improved latency and wireless range performance.
Multi-Device Pairing
:
N/A
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.
NFC Pairing
:
N/A
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
These headphones are not Bluetooth compatible.
7.2
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 Audio
- 9% USB Audio
- 26% PS4 Compatible
- 26% Xbox One Compatible
- 26% PC Compatible
Score distribution:
OS Compatibility
:
Not OS specific
What it is:
Testing the headphones' cable to see which operating system it works with.
When it matters:
Some wired headphones don't support all operating systems so this allows you to check if the headphones will work with your device.
Analog Audio
:
Yes
What it is:
When your headphones can play analog media using a standard 1/8" TRS audio jack. Includes using a 1/4" or 1/16" TRS with a 1/8" TRS adapter.
When it matters:
For listening to music with devices that have a standard 1/8" TRS audio jack, like an MP3 player, tablet, smartphone or PC.
Good value:
Yes
USB Audio
:
No
What it is:
When your headphones can play digital media using a standard USB connector.
When it matters:
For listening to music on a PC. A digital USB adapter can offer some advantages over a regular audio jack, like a DAC or added software support.
Good value:
Yes
PS4 Compatible
:
Audio Only
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
Xbox One Compatible
:
Audio Only
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
PC Compatible
:
Audio Only
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
These headphones need a specialized amplifier/energizer to be used and get audio. We measured them through a Schiit Ragnarok amp and an iFi iESL Pro energizer. Technically, you should be able to route these to your consoles and get audio, but this wouldn’t be common usage.
0
Base/Dock
What it is:
The base station, dock or dongle transmitter of wireless headphones that receive data/audio via a specific frequency range or wired headphones that have a proprietary amp.
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
Score distribution:
Type
:
N/A
What it is:
The type of base/dock the headphones use, whether a USB dongle, charging case or docking station. Wired or wireless.
When it matters:
Larger docking stations tend to have more controls and sometimes even customization options while smaller USB dongles are more portable. Charging cases allow you to keep your earbuds charged on-the-go.
Optical Input
:
N/A
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
Line In
:
N/A
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
Line Out
:
N/A
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
USB Input
:
N/A
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.
RCA Input
:
N/A
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
PS4 Compatible
:
N/A
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
Xbox One Compatible
:
N/A
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.
PC Compatible
:
N/A
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
Power Supply
:
N/A
What it is:
The connector type of the power source for the base/dock/transmitter.
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
Dock Charging
:
N/A
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
The Stax SR-L300 technically don’t have a base or a dock that will let you charge the headphones, but you’ll need an energizer to make them work.
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. 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:
- 77% Obstructed Range
- 23% Line of Sight Range
Score distribution:
Obstructed Range
:
N/A
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
Score distribution:
Line of Sight Range
:
N/A
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
Score distribution:
These headphones are wired, and you’ll be limited by their 7.9-foot long cable.
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:
- 34% Default Latency
- 33% aptX Latency
- 33% aptX(LL) Latency
Score distribution:
Default Latency
:
0 ms
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
Score distribution:
aptX Latency
:
N/A
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
Score distribution:
aptX(LL) Latency
:
N/A
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
Score distribution:
Thanks to their wired connection, these headphones don’t have any latency issues and would be suitable to watch video content or gaming.
In the box
- Stax headphones
- Manuals
Compared to other Headphones
The Stax SR-L300 are very good critical listening headphones and set themselves apart with their unconventional retro look and electrostatic drivers. Unfortunately, they feel very cheaply made and flimsy, which is disappointing for their high-end price tag. If you want better-built high-fidelity headphones to enjoy your music, take a look at our recommendations for best audiophile headphones.
Sennheiser HD 800 S
The Sennheiser HD 800 S are better critical listening headphones than the Stax SR-L300. They are more comfortable for longer listening sessions, and their build is durable and doesn’t feel as flimsy as the Stax. They also pack more bass, while still having great mid and treble range performance. Their 1/4” TRS connection is also more versatile. You will also need an amp and energizer to drive the Stax correctly. On the other hand, the Stax still have great audio reproduction and are significantly cheaper than the HD 800 S.
HiFiMan Ananda
The HiFiMan Ananda are better critical listening headphones than the Stax SR-L300. These planar magnetic headphones are more comfortable and have a great sturdy design. They also pack more bass while still having great mid and treble ranges. They also seem to be more open-sounding. On the other hand, the Stax are more lightweight and have less distortion, for a cleaner audio reproduction.
Sennheiser HD 600
If you only care about sound, the Stax SR-L300 are better headphones than the Sennheiser HD 600 for music without low-bass. Their audio fidelity is better and more accurate. They also sound significantly more open than the HD 600. However, they are very flimsy and feel cheaply made. The HD 600 are sturdier and will be more versatile due to their 1/4” TRS connection. You won’t need an amp and energizer to drive these as you would need with the Stax.
Audeze LCD 2 Classic/LC2C
The Audeze LCD2-Classic are better critical listening open-back headphones than the Stax SR-L300. They have a very solid build, and their 1/4” connection is more versatile. They deliver more accurate bass and don’t lack low-bass like the Stax, but their mid-range is slightly overemphasized, and their sibilants might lack a bit of brightness when compared to the Stax. They are also quite tight on the head and are heavy headphones. If you’re looking for critical listening headphones for music that don’t have any low-bass like classical music, the Stax might be a better option; just be careful with them, as they feel very flimsy.
Conclusion
Bad for mixed usage. The Stax SR-L300 are made for critical listening and have great audio reproduction. However, they require an energizer to work, and you won’t be able to use them for commuting and physical activity. Also, their open-back design makes them unusable at the office. They have a long cable, but it shouldn’t be long enough for you to watch TV from your couch, and they also don’t have a microphone for online gaming.
Very good for critical listening. Their bass is lacking in lower frequencies but is well-balanced otherwise. On the upside, they have excellent mid and treble ranges which will reproduce vocals, leads, and cymbals accurately. They might be a bit sibilant for some people due to small bumps in the treble range. These headphones will be better suited for classical and vocal-centric music, but won't be a good choice for bass-heavy genres like EDM and hip-hop. Unfortunately, their build quality is sub-par, so it's best to be gentle with these, or you might break them.
Unusable for commuting. You’ll need a specialized amp or energizer to drive these headphones since your smartphone won’t do the trick. They are also leaky, and open-back headphones don’t isolate from ambient noise.
Unusable for sports. They aren’t stable on the head and would come off instantly, and that’s if they didn’t need an energizer. It would be practically impossible to use them during a workout, as you’d need your energizer with you at all times. Even if you were to set your treadmill very close to it, they aren’t breathable headphones, and you’d sweat more than usual.
Bad for the office. These open-back headphones leak a lot, and everybody around you will be able to hear clearly what you’re listening to. They also don’t isolate against ambient chatter and other noise in your surroundings.
Sub-par for watching TV. These aren’t ideal because you’re still limited by the cable length and probably won't be able to watch from your couch. Also, their open-back design doesn’t isolate and leaks a lot, meaning you’ll still hear the noise in your household, and people will still hear what you’re watching. On the upside, you won’t notice any delay if you choose to watch any video content with these.
Sub-par for gaming. The Stax SR-L300 don’t have a microphone for online gaming, but their sound quality is great, and they should be comfortable for long gaming sessions if you take them off now and then to let your ears cool off a bit. If you don’t need a boom microphone, critical listening headphones can be a decent choice for gaming.
