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Reviewed on May 04, 2018 , Marc Henney, Jean-Christophe Lamontagne

Sony MDR-7506
HEADPHONES REVIEW

Usage Ratings - Version 1.2

Test Benches:

  • 1.2: Winter 2018
  • 1.1: Summer 2017
  • 1.0: Winter 2017
  • 0.9: Winter 2016
6.1
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:
7.4
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:
5.4
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.
5.6
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.
5.8
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.
5.6
Gaming
Type : Over-ear
Enclosure : Closed-Back
Wireless : No
Noise-Cancelling : No
Mic : No
Transducer : Dynamic

The Sony MDR-7506 are comfortable, closed-back critical listening headphones with a good sound. They're a little cheaply built but they don't leak much, which makes them a good option for recording. However, they're not the most versatile headphones, sot they won't stay on your head if you run with them and poorly isolate you from the ambient noise of your environment.

Test Results
Design 6.1
Sound 7.5
Isolation 6.1
Microphone 0
Active Features 0
Connectivity 4.8
Pros
  • Good audio reproduction.
  • Lightweight and comfortable design.
  • Low leakage.
Cons
  • Poor noise isolation.
  • Unstable fit.
  • Plasticky and weak build quality.
Update 2/16/2018: Converted to Test Bench 1.2.
Update 8/10/2017: Converted to Test Bench 1.1. Learn more about our new versioned test bench system here.

Check Price

6.1

Design

Score components:

The Sony MDR-7506 have a simple studio design and a comfortable fit. The wide headband and large ear cups are decently padded, even if the padding material feels a little cheap. Unfortunately, the build quality is slightly weaker at the hinges and although there's a thin metal frame to strengthen the headband, they don't feel like very durable headphones. They're also not the best for sports or physical activity. They will quickly fall if you run or jog with them.

Style

The Sony MDR-7506 have a straightforward over-ear design that feels a bit bland but will work for most. The understated, all-black color scheme, is highlighted by a few branding logos. The ear cups are large and oval and the wide headband is lightly padded and covered in a faux-leather like material. They look a bit cheap and won't stand out in a crowd but the minimal, studio aesthetic and and simple style will please some listeners.

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
Weight : 0.46 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.
:
0.85 lbs

The Sony MDR-7506 are comfortable and lightweight headphones. The ear cups are large enough to fit well around most ears. They're not too tight, so they don't get uncomfortable during long listening sessions. However, although soft, the padding fabric used feels a little cheap and susceptible to wear and tear. It also feels a bit rougher on the skin than the padding on some of the more premium models.

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.
Ease of use : N/A
Feedback : N/A
Call/Music Control : No
Volume Control : No
Microphone Control : N/A
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
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.
:
N/A
Additional Buttons : N/A

These headphones do not have a control scheme and do not come with an additional audio cable with an in-line remote like some of the other wired designs.

6.6 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:
Avg.Temp.Difference : 5.3 C

The Sony MDR-7506 are decently breathable headphones but will still make you ears make your ears fairly warm during long listening sessions. They have a closed back over-ear design that prevents airflow so they won't be suitable for exercising or working out but should be okay for more casual listening.

6.2 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:
L : 5 "
W : 5.7 "
H : 2.9 "
Volume : 82 Cu. Inches
Transmitter required : N/A

The MDR7506 are decently portable headphones. They're about average sized for an over-ear model, but the foldable design tightly tucks the ear cups within the frame to save space. They won't be the easiest headphones to carry around on your person, but they will comfortably fit into most bags. Unfortunately, they don't come with a pouch or case.

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
Type : No case
L : N/A
W : N/A
H : N/A
Volume : N/A

These headphones do not come with a pouch or case.

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

The build quality on these headphones feels mediocre-at-best. They have a thin metal frame that somewhat reinforces the build, and they're lightweight with dense enough plastic to withstand a few falls without damage. However, these headphones feel a little cheap. The rest of the design is a bit too plasticky for their price and creaks a bit when putting on the headphones. The hinges are relatively weak, and the wiring is slightly exposed which could get damaged through regular use. They're decently built just not as durable as some other headphones even within the same price range.

5.5 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

These headphones feel very loose on the head. While the lack of tension is good for comfort it makes the fit less stable. They won't slide off your ears during casual listening sessions but they're not meant for physical activity or sports. They will easily fall off your head if used while running or jogging. Also the non-detachable audio cable is a bit bothersome and makes the headphones more likely to fall if it get hooked by something.

Cable
Detachable : No
Length : 4.17 ft
Connection : 1/8" TRS

The MDR-7506 do not come with any additional cables.

Top
Headshots 1
Headshots 2
7.5

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.)

The Sony MDR-7506 are a good sounding pair of closed-back over-ear headphones. They have a very good, deep, powerful, and punchy bass, an excellent and clear mid-range, and a better-than-average treble. However, their bass is a bit on the heavy side, but without being muddy or boomy which some may like. Also, their treble could sound a bit harsh and piercing on S and T sounds (sibilant), especially on overly bright tracks. Overall, they are a very versatile pair of headphones suitable for a wide variety of genres, from bass-heavy dubstep and film scores, to rock, folk, and even audiobooks. Additionally, they have great imaging, but like most closed-back headphones, don't have a large and speaker-like soundstage. For a more neutral bass, consider the Beyerdynamic DT 770, which also sounds a bit sibilant. For a better treble and overall sound, the Audio-Technica ATH-M50x would be a good alternative.

8.4 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:
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
:
2.34 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
:
10.91 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
:
3.18 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
:
2.45 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
:
-0.35 dB

The bass is great. LFE (low-frequency extension) is at 11Hz, which is excellent. Low-bass, responsible for the thump and rumble common to bass heavy genres like EDM and Hip-hop is above our neutral target by 3dB. This brings a bit of excess thump to their bass, which some people may find pleasant. Mid-bass, responsible for the body of bass guitars and punch of kick drums, is flat and even, but overemphasized by 2.5dB. High-bass, responsible for warmth, is well-balanced which is great, since overemphasis in this range is quite detrimental to sound and common among bass-heavy headphones. Overall, the Sony has a powerful and punchy bass, without being boomy or muddy.

8.9 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:
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
:
1.42 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
:
-0.97 dB
Mid-Mid
What it is: The average amount of over/under-emphasis in frequency response from 500Hz-1KHz.
When it matters: This range is occupied mostly by upper harmonics. Over-emphasis sounds forward and boxy. Under-emphasis pushes instruments to the back of the mix.
Good value: +/-3dB
Noticeable difference: 0.1dB
:
-0.93 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
:
-0.25 dB

The mid-range of the Sony 7506 is excellent. The response throughout the range is quite flat and even, and within 1dB of our neutral target. This suggests a well-balanced and clear reproduction of vocals and lead instruments. The dip around 250Hz could thin out vocals a little bit but this will also help bring out the punch and kick in the bass range.

7.1 Treble
What it is: Frequency Response from 2KHz-20KHz
When it matters: When the material is heavy on high-range frequencies, such as voice, cymbals, and any other material where brightness, brilliance and airiness is desired.
Score components:
Std. Err.
What it is: The amount of deviation (weighted standard error) in treble frequency response (2.5KHz-20KHz) as compared to a target response that would sound perfectly balanced to most people.
When it matters: When a balanced and neutral (reference) treble performance is desired.
Good value: <4dB
Noticeable difference: 0.1dB
:
4.27 dB
Low-Treble
What it is: The average amount of over/under-emphasis in frequency response from 2KHz-5KHz.
When it matters: Almost all instruments rely on this range for their presence, detail, and articulation. Over-emphasis can sound harsh and painful. Under-emphasis hurts the comprehensibility of vocals and lead instruments.
Good value: +/-3dB
Noticeable difference: 0.1dB
:
2.43 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
:
-0.62 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
:
-7.66 dB

The treble is decent. Low-treble is even and flat, but above our neutral target by about 2dB. This bring a bit of extra emphasis and presence to vocals and lead instruments. The 10dB peak around 10KHz makes the sound of this headphone noticeably sibilant (sharp on S and Ts) on vocals and cymbals, especially on overly bright tracks.

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.
7.5 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:
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
:
0.51 dB

The frequency response has good consistency. In the bass range, the maximum deviation across our five human subjects is about 5dB, which is subtle but noticeable. The treble range shows more consistency below 10KHz with the maximum deviation of about 5dB and in very narrow ranges.

8.6 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.
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
:
0.28
Weighted Amplitude Mismatch
What it is: The Left/Right balance of our test unit, that is, the amount of amplitude difference between the left and right drivers. This is not a design test, but a marker for manufacturing tolerance and ergonomics.
When it matters: When a properly balanced stereo image and low manufacturing tolerance is desired. A poor score indicates a noticeable difference in level between the left and right drivers.
Good value: <1.5
Noticeable difference: 0.1
:
0.61
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
:
1.51
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
:
5.33

The imaging of the MDR-7506 is great. Weighted group delay is at 0.28, which is within very good limits. The GD graph also shows that the entire group delay response is below the audibility threshold. This ensure a tight bass and a transparent treble reproduction. Additionally, the L/R drivers of our test unit were very well-matched. This is important for the accurate localization and placement of objects (voices, instruments, video game effects) in the stereo image.

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.
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
:
2.87 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
:
1.72 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
:
9.66 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
:
4.6
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
:
2.9
Correlated Crosstalk
What it is: How strong and solid the phantom center is. This is mostly a stereo quality and its effects on mono content are minimal. This test is sensitive to the phase of the crosstalk and whether it is produced acoustically or electronically.
When it matters: When a true reproduction of the stereo image is desired. A value of 0 indicates no crosstalk, or that the existing crosstalk is not correlated enough to affect the phantom center. A negative score means the crosstalk is out of phase with the original signal, resulting in a slightly wider stereo image at the expense of creating a 'hole' at the center of the stereo field. A positive score means the crosstalk is in phase and positively affecting the phantom center.
Good value: >1dB
Noticeable difference: 0.3dB
:
0.0 dB

The Sony 7506 has a sub-par soundstage. Due to its shallow earcups, this headphones interacts with the pinna more like an on-ear headphones. This can be seen in the low amount of pinna activation (PRTF size). This suggests a soundstage that is perceived to be small, and located mostly inside the listener's head. Also, because of their closed-back design, their soundstage may feel less open and spacious compared their open-back counterparts.

7.6 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:
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
:
0.67
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
:
4.193

The harmonic distortion performance is good. The overall amount of harmonic distortion is within good limits. However, the sharp peaks in THD in the mid and treble ranges could make the sound of those frequencies a bit harsh and brittle.

6.1

Isolation

Score components:

Like most passively isolating headphones, the Sony MDR-7506 will prevent some high-frequency noise from seeping into your audio. Unfortunately, it's not enough for the loud, noisy environments of public transit. They won't do well as commuting headphones, but on the upside, they don't leak much, so no one will hear what you're listening to, even in quieter settings.

5.4 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 environment (airplane, subway, etc.)
Score components:
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
:
-11.75 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
:
0.53 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
:
-7.14 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
:
-29.17 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 is sub-par. These headphones don't have active noise cancellation (ANC), and don't isolate in the bass range at all. This means they will fully let in the rumble of bus and airplane engines. In the mid-range, important for blocking speech, they isolate by 8dB, which is about average. In the treble range, occupied by sharp sounds like S and Ts, they achieve 30dB of isolation, which is good.

7.5 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:
Leakage Audio
What it is: The simulated sound leakage heard 1 foot away from the user, while the user is listening to a 100dB SPL signal. This recording is created using an EQ and is not an actual recording.
When it matters: When you don't want people to hear what you are listening to.
:
Overall Leakage @ 1ft
What it is: The amount of sound leakage heard 1 foot away from the user, while the user is listening to a 100dB SPL signal.
When it matters: When you don't want people hear what you are listening to.
Good value: <35dB
Noticeable difference: 1dB
:
37.13 dB

The Sony MDR-7506 has a good leakage performance. The significant portion of the leakage is spread between 2KHz and 5KHz, which is a relatively narrow range. The overall level of the leakage is quiet too. With the music at 100dB SPL, the leakage at 1 foot away averages at 37dB SPL and peaks at 50dB SPL, which is the same as the noise floor of most offices.

0

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

These headphones do not come with a microphone. For a wired headphone with a good in-line microphone, check out the Bose SoundTrue Around-Ear II, the QuietComfort 25 or the Apple EarPods.

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

These headphones do not have a microphone so the recording quality has not been tested.

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:
Speech + Pink Noise : N/A
Speech + Subway Noise : N/A
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
:
N/A

The Sony MDR-7506 do not have a microphone so the noise handling has not been tested.

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:

These headphones 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 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.
:
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 headphones do not have a dedicated, compatible app for added customization.

4.8

Connectivity

What it is: The inputs and outputs of wired and wireless headphones, as well as their latency performance and range.
When it matters: When you want to know whether your headphones will be compatible with your various audio sources, like your smartphone, tablet, gaming consoles, PC, smart TV, amplifiers, etc.
Score components:

The Sony MDR-7506 are straightforward wired headphones with no in-line remote or microphone on their cable. This means they have practically no latency for watching movies and videos but do not have the convenient range of a wireless headphone. Also, since they have no mic they will only have audio support when plugged into your console or PC.

0 Bluetooth
What it is: Bluetooth support for wireless headphones.
When it matters: When you want to connect your headphones wirelessly to a Bluetooth source, like your smartphone, tablet, PC or smart TV.
Score components:
Bluetooth Version
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.
:
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 Pairing
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

The Sony MDR-7506 headphones 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.

7.2 Wired
What it is: The type and compatibility of audio cables for wired and wireless headphones.
When it matters: When you want to use your headphones wired with a device that has a regular audio jack (line-out), like a smartphone, PC, or gaming console controller.
OS Compatibility
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.
:
Not OS specific
Analog Audio
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
:
Yes
USB Audio
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
:
No
PS4 Compatible
What it is: PS4 compatibility with a regular 1/8" TRS or TRRS audio cable.
When it matters: When you want to use a wired headphone with your PS4 controller.
Good value: Audio + Microphone
:
Audio Only
Xbox One Compatible
What it is: Xbox One compatibility with a regular 1/8" TRS or TRRS audio cable.
When it matters: When you want to use a wired headphone with your Xbox One controller.
Good value: Audio + Microphone
:
Audio Only
PC Compatible
What it is: PC compatibility with a regular 1/8" TRS or TRRS audio cable.
When it matters: When you want to use a wired headphone with your PC.
Good value: Audio + Microphone
:
Audio Only

These headphones have a single non-detachable audio cable with no in-line remote. This means they will only provide audio when connected to your PS4 or Xbox One controller.

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: When you need to know which inputs and outputs the headphones support, so you can set them up with your home theatre system for gaming or watching movies.
Type
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.
:
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 for the base/dock.
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 an AC 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

The MDR-7506 do not have a dock. If you need a headset with a dock that also has a wired connection for gaming or watching movies, then consider the SteelSeries Arctis 7.

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: When 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 much greater range than an audio cable could provide, especially if the audio source is heavy or difficult to carry. Note that wireless range also depends on your audio source's signal strength, which may vary between devices.
Score components:
Obstructed Range
What it is: The range that the wireless headphones can reach before dropping any audio when the Bluetooth source was placed in another room. We test our obstructed range with a Moto E4 Plus. Results may vary depending on your phone model or Bluetooth source.
When it matters: If you can't or prefer not to carry your Bluetooth source on you while listening to your audio in an indoor environment. Although, the obstructed wireless range will slightly depend on your home or office layout. Note that wireless range also depends on your Bluetooth source's signal strength which may vary from device to device or depending on your phone model.
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

The Sony MDR-7506 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.

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. Note that latency also depends on the device and applications you use.
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 wirelessly, high latency can cause sync issues between the images you see and the audio you hear.
Good value: 50 ms or less
Noticeable difference: 15 ms
:
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 you often stream music over Bluetooth. It also slightly improves latency when watching videos with wireless headphones.
Good value: 50 ms or less
Noticeable difference: 15 ms
:
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: Latency is a lot more noticeable when watching videos or gaming than when just listening to music.
Good value: 50 ms or less
Noticeable difference: 5 ms
:
N/A

These headphones have practically no latency since they have a wired design. Unfortunately, this also means that they're limited by the range of the audio cable.

In the box

  • Sony MDR-7506 headphones
  • 1/8" to 1/4" adapter

Compared to other Headphones

The Sony MDR-7506 are straightforward, closed-back, critical listening and recording headphones. They have a well-balanced sound that packs a good amount of bass but also a sharper spike in the treble range that could sound a bit harsh with already bright tracks. They're one of the best studio headphones we've tested. Unfortunately, they do not have the best build quality although they are lightweight and decently comfortable. On the upside, they are fairly affordable and a good alternative to most of the similarly designed closed back critical listening headphones below. See our recommendations for the best audiophile headphones and the best headphones under $100.

Audio-Technica ATH-M50x

The Audio-Technica ATH-M50x are better critical listening headphones than the Sony MDR-7506. They’ll be more comfortable to wear during long listening sessions and they feel better-built. Their sound is very good and more accurate than the Sonys, especially in the treble. Apart from that, the headphones are fairly similar, but you might be able to find the MDR-7506 at a cheaper price point, so they might offer better value.

Sony MDR-7520

The Sony MDR-7506 are slightly better critical listening headphones than the Sony MDR-7520. The MDR-7506 offer a better value thanks to their mid-to-budget price range. They also have a more comfortable fit than the MDR-7520 and they sound better overall with more bass. On the other hand, the MDR-7520 are a much better build headphone. They have more premium look and design and feel a lot more durable than the MDR-7506. They also come with a detachable cable which further increases their durability compared to the MDR-7506.

Conclusion
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6.1 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:
The Sony MDR-7506 are mediocre mixed usage headphones but perform better for critical listening. They have a good sound and low leakage, but they're not the most versatile headphones so they won't be ideal for sports or loud environments but they deliver in the sound department.
7.4 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:
Good for critical listening. The Sony MDR-7506 have a well-balanced sound with a punchy bass that doesn't drown the excellent mid-range. Instruments and vocals sounded good if a little lacking in detail and clarity compared to some other critical listening models like the DT 770 and the ATH-M50x. However, they have a decent soundstage, for closed-back headphones, and their sound quality is good enough to please most listeners.
5.4 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.
Not ideal for commuting. They poorly block noise in loud environments and have no additional features, like noise canceling or inline controls, to make commuting easier.
5.6 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.
Subpar for sports. These headphones are not stable enough to exercise or jog with they also have a bulky design that will hinder your movements during more strenuous physical activity.
5.8 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.
Mediocre at best for office use. They don't leak much, so you won't disturb your colleagues. Unfortunately, they also won't block the chatter of a lively office.
Mediocre for home theater use. The Sony MDR-7506 have a good sound that's suitable for music and movies and no latency since they're wired. However, the cable won't be long enough to comfortably watch TV from your couch, although the coiled cable does stretch farther than most.
5.6 Gaming
Below-average for gaming. They have a good sound and a low latency wired connection but are not as convenient or as customizable as most wireless gaming headsets. Also, they don't have a microphone, but on the upside, if you do not need voice chat, then they could be a decent option for consoles and PCs since they will provide audio for both the PS4 and Xbox One.

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