Preferred store
  1. Table of Contents
  2. Intro
  3. Design
    1. Style
    2. Comfort
    3. Controls
    4. Stability
    5. Portability
    6. Case
    7. Build Quality
    8. Breathability
    9. Cable
    10. Front
    11. Angled
    12. Side
    13. Rear
    14. Top
  4. Sound
    1. Bass
    2. Mid
    3. Treble
    4. Frequency Response Consistency
    5. Raw Frequency Response
    6. Soundstage
    7. Imaging
    8. Total Harmonic Distortion
  5. Isolation
    1. Noise Isolation
    2. Leakage
  6. Microphone
    1. Recording Quality
    2. Noise Handling
  7. Active Features
    1. Wireless Range
    2. Latency
    3. Battery
    4. App Support
  8. In the box
  9. Conclusion
  10. Q&A
Reviewed on Dec 26, 2017 , Marc Henney, Yannick Khong

MEE audio M6 PRO Noise-Isolating In-Ears
HEADPHONES REVIEW

Usage Ratings - Version 1.1
Show Help

Test Benches:

  • 1.1: Summer 2017
  • 1.0: Winter 2017
  • 0.9: Winter 2016
7.0
Mixed Usage
Show Help
What it is This is the combination of the different use cases to evaluate how versatile the headphones are. Therefore an everyday headphone should be well-rounded enough to adapt to most situations and environments without significant losses in sound quality, design ergonomics or isolation.
Score components:
6.8
Critical Listening
Show Help
What it is The level of audio fidelity a headphone can reproduce. Therefore a balanced and true representation of bass, mids, treble, soundstage and imaging, as well as a comfortable listening experience, is essential for critical listening.
Score components:
7.0
Commute/Travel
Show Help
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.
7.4
Sports/Fitness
Show Help
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.
6.9
Office
Show Help
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:
Type : In-ear
Enclosure : Closed-Back
Wireless : No
Noise-Cancelling : No
Mic : Yes
Transducer : Dynamic

The Mee M6 Pro are a more durable and better-built upgrade to the M6. They come with two cables and the transparent casing on the earbuds and the in-line remote makes them look and feel more premium. They're stable enough to exercise with, and thanks to their decently isolating and portable design they're an adequate choice for commuting. Unfortunately, they tend to sound a bit sharp and they won't be ideal for very noisy environments.

See our recommendations for the best In Ear Headphones.
Test Results
Design 7.7
Sound 6.6
Isolation 7.1
Microphone 6.8
Active Features 2.7
Pros
  • Portable and stable design.
  • Durable design, comes with two cables.
Cons
  • Slightly bright audio reproduction.

Check Price

Black single driver
SEE PRICE
Amazon.com
Clear, single driver
SEE PRICE
Amazon.com
7.7

Design

Show Help
Score components:
MEE audio M6 PRO Design Picture

The Mee audio M6 Pro are an improved version of the M6 with a more premium build quality. They come with two cables that make them a lot more durable than the original M6. They also have a transparent design that makes them stand out and look more high end. They're portable, although their case is a little large. They're also stable enough to exercise and work out with. They have a decent control scheme, but the transparent inline controls make it a bit hard to distinguish the buttons.

Style
MEE audio M6 PRO Design Picture 2

The MEE M6 Pro look somewhat similar to the regular M6 but with a detachable cable and transparent casing for the earbuds. This makes them stand out and look more premium than their price would suggest. They also have an ear-hook design with angled earbuds that better fit the contours of your ears. The Pro cable is also a bit thicker and more rubberized than the M6.

7.0 Comfort
Show Help
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
MEE audio M6 PRO Comfort Picture
Weight : 0.05 lbs
Clamping Force
Show Help
What it is: The force that the headphones exert on your head, once you have them on. This is purely a measurement of the force applied, which does not take into account the earpad's surface area and the resulting pressure you will feel, on or around your ears.
When it matters: The tighter the headphones, the more force they put on your head. This can get uncomfortable or cause pain and soreness during long listening sessions.
:
0 lbs

The Mee audio M6 Pro are slightly more comfortable than the M6 thanks to the additional memory foam tips. Their ear hook design is also less flimsy than on the original M6 which makes them fit your ears a bit more securely. However, they do not quite fit as snugly as some of the pricier in-ear headphones we've reviewed like the Westone W40. Also if you're not a fan of the in-ear fit, they may still get a bit fatiguing after wearing them for a while.

7.1 Controls
Show Help
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.
MEE audio M6 PRO Controls Picture
Ease of use : Above-average
Feedback : Average
Call/Music Control : Yes
Volume Control : Yes
Microphone Control : No
Noise Canceling Control : N/A
Talk-Through : N/A
Additional Buttons : No

These headphones have a simple and easy-to-use control scheme that's a bit difficult to see due to the transparent casing of the in-line remote. They provide the basic functions for call/music track skipping and volume control. The buttons are also relatively responsive although the slider could use a more discrete input with notches.

7.5 Stability
Show Help
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
MEE audio M6 PRO Stability Picture

The Mee M6 Pro have a decently stable design. The ear hooks prevent them from easily falling from your ears, but the lack of stiffness means they won't be as stable as more sports-oriented in-ears like the Q9A or the Powerbeats. On the upside, they're still great headphones to run with and will rarely fall out of your ears unless the cable gets hooked or tangled on something.

9.0 Portability
Show Help
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:
MEE audio M6 PRO Portability Picture
L : 2 "
W : 2 "
H : 1 "
Volume : 4 Cu. Inches
Stand required : N/A

The Mee audio M6 Pro like most in-ears are easy to carry around on your person. They will fit into most pockets and come with a good case that's a little large but still quite portable. This makes them practical and convenient to have on you at all times.

7.5 Case
Show Help
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
MEE audio M6 PRO Case Picture
Type : Soft case
L : 6 "
W : 3.4 "
H : 1.5 "
Volume : 30.6 Cu. Inches

Comes with a decent soft case that will protect the headphones from drops and impacts but adds quite a bit of bulk.

7.5 Build Quality
Show Help
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
MEE audio M6 PRO Build Quality Picture

The Mee M6 Pro feel a lot more premium than the M6. They have an additional cable in the box with no in-line controls. The cables are decently thick and the earbuds are dense yet lightweight enough that they won't get damaged by a few accidental drops. The ear hook on both cables feel a bit more rigid than on the M6 but they are still a bit flimsy when compared to more sports-oriented headphones. The cables though improved, do not feel as premium as those of more expensive headphones like the Shure SE425 or the Westone W40.

9.2 Breathability
Show Help
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:
MEE audio M6 PRO Breathability Before Picture MEE audio M6 PRO Breathability After Picture
Avg.Temp.Difference : 0.8 C

Cable
MEE audio M6 PRO Cable Picture
Detachable : Yes
Length : 4.2 ft
Connection : 1/8" TRRS

Comes with a detachable audio 1/8 TRRS cable.

Front
Angled
Side
Rear
Top
6.6

Sound

Show Help
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.)
MEE audio M6 PRO Frequency Response

The Mee audio M6 PRO is a mediocre sounding pair of closed-back in-ear headphones. They have an excellent, well-balanced and consistent bass, but a relatively recessed mid-range, and an overly bright treble that could sound distorted and harsh on certain tracks. Also, the L/R drivers of our test unit showed some mismatch that negatively affects their imaging. They also don't have an open or spacious soundstage like most other in-ears.

9.1 Bass
Show Help
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:
MEE audio M6 PRO Bass
Std. Err.
Show Help
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
:
1.27 dB
Low-Frequency Extension
Show Help
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
:
22.13 Hz
Low-Bass
Show Help
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
:
-1.77 dB
Mid-Bass
Show Help
What it is: The average amount of over/under-emphasis in frequency response from 60Hz-120Hz.
When it matters: Melodic bass instruments have most of their fundamental frequencies in this range. This is where the 'body' and 'punch' of the bass sits.
Good value: +/-3dB
Noticeable difference: 0.1dB
:
-0.67 dB
High-Bass
Show Help
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
:
1.45 dB

Excellent bass range performance. Low frequency is extended down to 22Hz, which is excellent. Low-bass is also well reproduced and shows only 2dB of underemphasis compared to our target. Conversely, high-bass is over our target by about 1.5dB, adding slight boominess to the sound.

8.4 Mid
Show Help
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:
MEE audio M6 PRO Mid
Std. Err.
Show Help
What it is: The amount of deviation (weighted standard error) in mid frequency response (250Hz-2.5KHz) as compared to a target response that would sound perfectly balanced to most people.
When it matters: When a balanced and neutral (reference) mid performance is desired.
Good value: <4dB
Noticeable difference: 0.1dB
:
2.13 dB
Low-Mid
Show Help
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
:
-0.51 dB
Mid-Mid
Show Help
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
:
-3.18 dB
High-Mid
Show Help
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
:
0.23 dB

Very good mid-range performance. The overall response is pretty consistent, but the 4dB dip centered around 700Hz pushes vocals/leads slightly to the back of the mix.

6.2 Treble
Show Help
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:
MEE audio M6 PRO Treble
Std. Err.
Show Help
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
:
4.95 dB
Low-Treble
Show Help
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
:
5.57 dB
Mid-Treble
Show Help
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
:
2.6 dB
High-Treble
Show Help
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
:
-4.57 dB

Mediocre treble range performance. Low-treble is overemphasized by more than 5dB, bringing excess brightness to vocals and lead instruments. The 10dB peak at 5KHz could make the treble to sound harsh on certain tracks.

8.5 Frequency Response Consistency
Show Help
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:
MEE audio M6 PRO Consistency L MEE audio M6 PRO Consistency R
Avg. Std. Deviation
Show Help
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
:
0.3 dB

Very good frequency response consistency. Like other in-ear headphones, if the user is able to achieve a proper fit, then they should be able to get consistent results each time.

2.3 Soundstage
Show Help
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 Error
Show Help
What it is: The average amount of deviation in Pinna-Related Transfer Function of the headphones, compared to that of a loudspeaker. Whether the soundstage is perceived to be unnatural, located inside or in front of the head, is dependent on this quality. The more the headphones activate the HRTF resonances of the ear (similar to what loudspeakers do), the more the soundstage will be pulled out from inside the listener's head. This quality affects both stereo and mono content.
When it matters: When a natural, in-the-front soundstage is desired, similar to that of a loudspeaker.
Good value: <5
Noticeable difference: 0.5
:
12 dB
Openness
Show Help
What it is: How open the headphones are, and how open and spacious they sound. This quality affects both stereo and mono content. 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.
When it matters: When an open, wide and roomy sound 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
:
4.4
Acoustic Space Excitation
Show Help
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 takes some of the characteristic of its environment (reflections/reverb) before reflecting back into the open headphones and to the listener's ears. This quality affects both stereo and mono content. This value is the inverse of the Leakage test score.
When it matters: When an open, wide and roomy sound is desired.
Good value: >7.5
Noticeable difference: 0.5
:
1.8
Correlated Crosstalk
Show Help
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

Poor soundstage performance. Due to the in-ear and closed-back design, the M6 PRO doesn't interact with the pinna, and doesn't sound open and spacious either.

6.3 Imaging
Show Help
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.
MEE audio M6 PRO Phase Response
Phase Error
Show Help
What it is: The average amount of deviation in the phase, from the ideal flat response.
When it matters: When an accurate and transparent imaging is desired.
Good value: <60°
Noticeable difference: 10°
:
53.02 °
Driver Mismatch (Amplitude)
Show Help
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: <0.3dB
Noticeable difference: 0.1dB
:
0.71 dB
Driver Mismatch (Frequency)
Show Help
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: <2dB
Noticeable difference: 0.1dB
:
2.47 dB
Driver Mismatch (Phase)
Show Help
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: <90°
Noticeable difference: 30°
:
148.05 °

Mediocre imaging performance. Phase error is minimal and most of it would be inaudible. However, the L/R drivers of our test unit showed significant phase mismatch in the treble range which will have a noticeable negative effect on the stereo image of the M6 PRO.

6.6 Total Harmonic Distortion
Show Help
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:
MEE audio M6 PRO Distortion
Weighted THD @ 90
Show Help
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
:
3.128
Weighted THD @ 100
Show Help
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
:
27.764

Mediocre harmonic distortion performance. The overall amount of harmonic distortion is quite low, even in the bass range and regardless of level. However, the large peak at 1KHz, could make that frequency range noticeably harsh sounding.

7.1

Isolation

Show Help
Score components:

The Mee audio M6 Pro do not isolate as well as the regular M6. They do very well against high-frequency noise but barely block any low frequencies which means they may not be ideal for public transit and commuting. On the upside, they barely leak, which makes them great headphones to use in quiet settings, when you don't want to distract those around you.

6.5 Noise Isolation
Show Help
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:
MEE audio M6 PRO Noise Isolation
Overall Attenuation
Show Help
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
:
-15.67 dB
Bass
Show Help
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
:
1.21 dB
Mid
Show Help
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
:
-13.26 dB
Treble
Show Help
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
:
-36.24 dB
Self-Noise
Show Help
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

Average isolation. Unlike the X2 and the BeatsX, the Mee M6 Pro deson't isolate in the bass range, and they even show some resonance buildup around 200Hz. In the mid-range, they achieve about 13dB of isolation which is above-average. In the treble range they reduce ambient noise by more than 36dB, which is good.

8.2 Leakage
Show Help
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:
MEE audio M6 PRO Leakage
Overall Leakage @ 1ft
Show Help
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
:
32.52 dB

Very good leakage performance. The significant portion of leakage sits between 4KHz and 6Khz, which is quite a narrow range and typical of most in-ears. The overall level of leakage is also low, and the leakage will consist of mostly S and T sounds.

6.8

Microphone

Show Help
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:

Average microphone performance. Speech recorded with the microphone of the Mee Audio M6 PRO sounds full and easily understandable, but will be rather boomy and muffled. They don't fare well in noisy environments, and also won't be able to separate speech from ambient noise in relatively loud environments like a busy street.

7.6 Recording Quality
Show Help
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:
MEE audio M6 PRO Microphone Frequency Response
Recorded Speech
Show Help
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
Show Help
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
:
20 Hz
FR Std. Dev.
Show Help
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
:
8.19 dB
HFE
Show Help
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
:
20777.89 Hz
Weighted THD
Show Help
What it is: The unwanted frequencies (harmonics) produced alongside the intended frequencies, which cause deformation of an output signal compared to its input.
When it matters: When clean and pure sound reproduction is desired, though its effect is not as noticable as frequency response.
Good value: <1.5
Noticeable difference: 1.0
:
11.889
Gain
Show Help
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
:
3.94 dB

Good recording quality. LFE is at 20Hz, but high-frequency extension basically cuts off at 5KHz. Additionally, there is a big bump in the bass range. This results in a recorded speech that sounds full, but boomy in the bass and rather airless and muffled in the higher frequencies.

5.9 Noise Handling
Show Help
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:
MEE audio M6 PRO SpNR
Speech + Pink Noise :
Speech + Subway Noise :
SpNR
Show Help
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
:
9.73 dB

Sub-par noise handling. The microphone of the M6 achieved a speech-to-noise ratio of 10dB, meaning they are not good at separating speech from ambient noise.

2.7

Active Features

Show Help
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:

No active features.

0 Wireless Range
Show Help
What it is: Headphones that offer a cable-free listening experience over a wireless network, typically via Bluetooth or radio frequency.
When it matters: If you don't want to be limited by the length of an audio cable. This means having the freedom to move around in your home or office with a much greater range than an audio cable could provide, especially, if the Bluetooth source is heavy or difficult to carry.
Score components:
Type
Show Help
What it is: The type and version of the wireless network, the headphones use to connect to the audio source. This could either be Bluetooth or radio frequency.
When it matters: The Bluetooth version will determine how compatible the headphones are with your Bluetooth enabled devices. Typically, newer Bluetooth versions are backward compatible with older ones but may lack the additional features that more recent Bluetooth protocols provide.
:
Wired Connection
Obstructed Range
Show Help
What it is: The range that the wireless headphones can reach before dropping any audio when the Bluetooth source was placed in another room.
When it matters: If you can't or prefer not to carry your Bluetooth source on you, while listening to your audio in an indoor environment. Although, the obstructed wireless range will slightly depend on your home or office layout.
Good value: >35ft
Noticeable difference: 5ft
:
N/A
Line of Sight Range
Show Help
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
NFC
Show Help
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.
:
N/A

10 Latency
Show Help
What it is: The latency 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:
Base Latency
Show Help
What it is: The Base RF latency or the default sub-band coding (SBC) of most Bluetooth headphones.
When it matters: When watching videos a high latency can cause sync issues between the images you see and the audio you hear.
Good value: 50ms or less
Noticeable difference: 15ms
:
0 ms
aptX Latency
Show Help
What it is: An audio coding algorithm (Codec) that improves bit rate efficiency. It reduces latency and improves sound quality over Bluetooth.
When it matters: For better sound quality if your often streaming music over Bluetooth. Also it slightly improves latency when watching videos with wireless headphones.
Good value: 50ms or less
Noticeable difference: 15ms
:
N/A
aptX(LL) Latency
Show Help
What it is: Low latency variation of aptX that significantly reduces sync issues between video and sound when using Bluetooth headphones.
When it matters: When watching videos or gaming latency is a lot more noticeable than just listening to music.
Good value: 50ms or less
Noticeable difference: 5ms
:
N/A

N/A Battery
Show Help
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:
Battery Type
Show Help
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
Show Help
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
Show Help
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
Auto-off
Show Help
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
Show Help
What it is: Some active headphones remain usable while charging. They continue to stream audio and do not disable other active features.
When it matters: This makes sure that your headphones's battery are not being drained when your relatively close to a power source. However, this means wireless headphones will need a wired connection to the power source during the charging process.
:
N/A
Passive Playback
Show Help
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

0 App Support
Show Help
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
Show Help
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
Show Help
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
Show Help
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
Show Help
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

No compatible features.

In the box

MEE audio M6 PRO In the box Picture

  • MEE Audio M6 Pro Headphones
  • Earbud tips (x6 sizes)
  • Audio cable (x2)
  • Carrying case
  • Manual

Conclusion

7.0Mixed Usage
Show Help
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 Mee Audio M6 Pro are a decently versatile in-ears. They're better built than the M6 and deliver a moderately well-balanced audio response but may sound a bit too sharp for some critical listeners. They're easy to carry around on your person with a stable and durable design that would be decent for sports. Unfortunately their lack of controls, mediocre isolation and the below-average sound they may not be the ideal headphones for more critical listeners.
6.8Critical Listening
Show Help
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:
Decent for critical listening. The M6 Pro have a moderately well balanced audio reproduction but may sound a bit too sharp for some. They also do not have a spacious soundstage due to their closed in-ear design. They won't be the ideal headphones for more critical listeners but they should sound decent enough for most casual listening.
7.0Commute/Travel
Show Help
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.
Above-average for commuting and traveling. They're comfortable and easy to carry around with you at all times. However, they isolate a little less than the M6 and some of the other in-ear headphones we've reviewed. On the upside, you can always mask some of the noise by playing your music a little louder since they do not leak much.
7.4Sports/Fitness
Show Help
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.
Above-average for sports. They have a good ear-hook design that's stable enough to run with and they're decently comfortable for an in-ear. Unfortunately, their controls can be a bit difficult to see due to the transparent casing and they may get tangled or hooked on something when exercising.
6.9Office
Show Help
What it is How well the headphones can deliver a comfortable and isolated listening experience in an office-like environment. They should not leak much and should block the noise of a busy office.
Score components:
Decent for office use. They barely leak even at very high volumes so they're a decent pair of headphones to use at the office. They block enough noise for most office environments but won't be the most isolating in-ears that we've tested.
Average for home theater. They have a decent sound and a low latency wired connection that's ideal if you're watching videos on your PC or tablet. However, the lack of range, from the relatively short audio cable, means they won't be the best headphones for a home theater set up your couch unless you have an extension cord.
Average for gaming. They have practically no latency since they're wired. Unfortunately, they do not have the best microphone for gaming and have no active features or customisation options which are typically some of the reasons to get a gaming headset.
Questions Found an error?

Let us know what is wrong in this question or in the answer.

Email:

Questions & Answers

1 ANSWERED QUESTIONS
0
between these m6 pro and the shure 425 regarding fidelity and sound quality, which is better? taking into account the price of each one. Thanck you
Between the two, our recommendation would be the M6 Pro, especially when considering the price. However, the 1More Triple Driver In-Ear would be our top recommendation for a wired in-ear pair.
Questions Have a question?

Before asking a question, make sure you use the search function of our website. The majority of the answers are already here.

Current estimated response time, based on # of pending questions: 3.0 business days.

:
:
A valid email is required. We answer most questions directly by email to prevent cluttering the site.