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Cooler Master MH751 Headphones Review

Tested using Methodology v1.4
Reviewed Dec 17, 2020 at 07:20 am
Cooler Master MH751 Picture
5.7
Mixed Usage
7.4
Neutral Sound
5.1
Commute/Travel
5.2
Sports/Fitness
5.5
Office
5.3
Wireless Gaming
7.3
Wired Gaming
7.3
Phone Calls
Type Over-ear
Enclosure Closed-Back
Wireless No
Noise Cancelling No
Mic Yes
Transducer Dynamic

The Cooler Master MH751 are basic wired gaming headphones. They have a reasonably comfortable fit, a well-balanced sound profile, and a detachable boom microphone that offers excellent recording quality. That said, they feel slightly cheaply made, don't have any sound customization features, and block out very little ambient noise. Otherwise, if you're looking for a pair of simple over-ear headphones with a high-quality mic, they're a good option.

Our Verdict

5.7 Mixed Usage

The Cooler Master MH751 are sub-par for mixed usage. Their bulky size, sub-par noise isolation capability, and wired-only connection make them a poor fit for use on-the-go. However, their well-balanced sound profile, high-quality boom microphone, and decently comfortable fit make them a solid option for use at home, whether you're listening to music in a quiet room or gaming online with some friends.

Pros
  • Well-balanced sound profile.
  • Decently comfortable to wear.
Cons
  • Sub-par noise isolation capability.
  • Bulky design.
  • No sound customization features.
  • Limited control scheme.
7.4 Neutral Sound

The Cooler Master MH751 are decent for neutral sound. Their sound profile is quite well-balanced overall, with impressive bass accuracy and a flat and even mid-range that yields full-bodied, present, and detailed vocals and lead instruments. Unfortunately, they struggle to deliver audio consistently and don't have any sound customization features.

Pros
  • Well-balanced sound profile.
  • Decently comfortable to wear.
Cons
  • Can struggle to deliver audio consistently.
  • No sound customization features.
5.1 Commute/Travel

The Cooler Master MH751 are poor for commuting and traveling, though this isn't their intended use. They block out very little ambient noise, especially the rumble of bus and plane engines, and aren't very portable. They also lack any sort of on-board controls for media playback or call management. That said, they should be comfortable enough to wear for extended periods.

Pros
  • Decently comfortable to wear.
Cons
  • Sub-par noise isolation capability.
  • Bulky design.
  • Limited control scheme.
5.2 Sports/Fitness

The Cooler Master MH751 are a poor option for sports and fitness, though they aren't designed for this purpose. They do a middling job of staying in place and are quite bulky. They have a limited control scheme, so you may need to pull your phone out to make playback adjustments. Their wired connection also increases the chance of the audio cable snagging on something and pulling the headphones from your ears.

Pros
  • Decently comfortable to wear.
Cons
  • Bulky design.
  • Unstable fit.
  • Limited control scheme.
5.5 Office

The Cooler Master MH751 are middling for office use. They don't block out that much ambient noise overall, and due to their wired-only connection, they lack any sort of handy wireless features like multi-device pairing. However, they're decently comfortable and don't leak all that much noise, while their boom mic can be detached to give them a slightly more professional look.

Pros
  • Decently comfortable to wear.
Cons
  • Sub-par noise isolation capability.
  • Limited control scheme.
5.3 Wireless Gaming

The Cooler Master MH751 are wired-only and can't be used wirelessly.

7.3 Wired Gaming

The Cooler Master MH751 are decent for wired gaming. They have a decently comfortable fit, virtually no audio latency, and a high-quality boom microphone that should ensure that your teammates understand you clearly. They also have a fairly well-balanced sound profile, though they lack any sort of sound customization features and don't have a companion app.

Pros
  • Well-balanced sound profile.
  • Decently comfortable to wear.
  • Amazing microphone recording quality.
Cons
  • Can struggle to deliver audio consistently.
  • No sound customization features.
  • Limited control scheme.
7.3 Phone Calls

The Cooler Master MH751 are a satisfactory choice for making phone calls. Their boom microphone makes your voice sound clear, full-bodied, and natural, and it doesn't struggle too much with isolating speech from background noise. Unfortunately, the headphones themselves let in a lot of ambient noise, so you may have trouble understanding what's being said on the other end of the line.

Pros
  • Amazing microphone recording quality.
Cons
  • Sub-par noise isolation capability.
  • 5.7 Mixed Usage
  • 7.4 Neutral Sound
  • 5.1 Commute/Travel
  • 5.2 Sports/Fitness
  • 5.5 Office
  • 5.3 Wireless Gaming
  • 7.3 Wired Gaming
  • 7.3 Phone Calls

Test Results

perceptual testing image
Design
Design
Style

Similar to the Cooler Master MH630, the Cooler Master MH751 have a fairly conservative design, with a monochrome black-over-gray color scheme and faux-leather-lined headband. Their detachable boom microphone also helps to give them a more casual appearance than other gaming headphones.

7.0
Design
Comfort
Weight 0.61 lbs
Clamping Force
0.7 lbs

The Cooler Master MH751 are decently comfortable. They're lightweight, have plushly-padded ear cups, and don't squeeze your head too tightly. Unfortunately, some users may find the size-adjustable headband a little too loose, and it can lose its size adjustment setting quite easily. If you wear glasses or like wearing a hat as you game, they also may not provide a consistent seal against your head.

5.7
Design
Controls
OS Compatibility
Not OS specific
Ease Of Use Good
Feedback Good
Call/Music Control No
Volume Control Yes
Microphone Control Mute/Unmute
Channel Mixing
No
Noise Cancelling Control No
Talk-Through
No
Additional Controls No

These headphones have a middling control scheme. The in-line remote features a volume wheel and a microphone mute/unmute slider, but that's it. It's easy to tell the two controls apart, and the volume slider has stops for the minimum and maximum setting. Unfortunately, there's little in the way of physical feedback as you use the controls, and you won't receive any voice prompts, either.

5.7
Design
Portability
L 7.7 "
W 5.3 "
H 3.4 "
Volume 139 Cu. Inches
Transmitter Required No

The Cooler Master MH751 aren't very portable. Their boom mic is removable and their ear cups swivel flat, which slightly reduces their footprint, but the headphones themselves are still quite bulky.

5.0
Design
Case
Type Pouch
L N/A
W N/A
H N/A
Volume N/A

These over-ears come with a carrying pouch made of a velvet-like material. It's thin and isn't likely to protect the headphones from water exposure or impacts. It also doesn't close fully, so they could fall out if the pouch is held upside down.

6.5
Design
Build Quality

The Cooler Master MH751 are fairly well-built. They're mostly made of plastic, though the padding around the ear cups and headband is lined with faux leather. While their detachable braided audio cable is a nice touch, the ear cup hinges feel somewhat fragile, as though they could break if the headphones are dropped.

5.5
Design
Stability

The Cooler Master MH751 aren't very stable. Even minor shakes of the head can cause them to slip off. Their audio cable can also snag on something if you wear them while walking around, though it shouldn't be yanked from its socket since it can be locked in place.

Design
Headshots 1
Design
Headshots 2
Design
Top
Design
In The Box

  • Cooler Master MH751 headphones
  • 1/8" TRRS cable
  • Y-splitter
  • Detachable microphone
  • Carrying pouch
  • Manual

Sound
Sound
Sound Profile
Bass Amount
-1.81 db
Treble Amount
-1.93 db

These headphones have a fairly well-balanced sound profile. While some gamers may want a little more thump and rumble to emphasize sound effects, their mid-bass through the high-mid range is very flat and even. In-game dialogue and music, not to mention the voices of your teammates, should sound full-bodied, clear, and detailed. Unfortunately, they don't offer any sort of sound customization features, like an EQ or audio presets.

5.9
Sound
Frequency Response Consistency
Avg. Std. Deviation
0.98 dB

These headphones have sub-par frequency response consistency. Their bass and treble delivery are quite sensitive to their fit, seal, and positioning, which could be a more significant issue if you wear glasses or have thick hair.

Sound
Raw Frequency Response
8.2
Sound
Bass Accuracy
Std. Err.
2.41 dB
Low-Frequency Extension
44.26 Hz
Low-Bass
-3.47 dB
Mid-Bass
1.08 dB
High-Bass
2.67 dB

The bass accuracy is great. The lack of low-bass may rob some sound effects as well as EDM and hip-hop music of thump and rumble, but their slightly overemphasized mid and high-bass ranges result in plenty of warmth and punch. That said, due to their sub-par frequency response consistency, your listening experience may vary.

9.1
Sound
Mid Accuracy
Std. Err.
1.15 dB
Low-Mid
0.96 dB
Mid-Mid
0.41 dB
High-Mid
0.94 dB

The Cooler Master MH751 have remarkable mid-range accuracy. In-game dialogue, as well as vocals and lead instruments, should sound full-bodied, present, and clear in the mix.

7.3
Sound
Treble Accuracy
Std. Err.
3.63 dB
Low-Treble
-1.36 dB
Mid-Treble
-0.17 dB
High-Treble
-6.21 dB

The treble accuracy is decent. A slight dip in the low to mid-treble range can muddle the clarity of vocals and lead instruments and gives a slightly lispy quality to some sibilants. Since their treble delivery can vary drastically depending on their fit, seal, and positioning, your experience may vary.

7.6
Sound
Peaks/Dips
Peaks
1.54 db
Dips
1.27 db

The Cooler Master MH751 have good peaks and dips performance. The uneven dip in the low-bass range may result in a bit of missing thump and rumble in some mixes. A bump in the mid through high-bass range can give a slightly boomy quality to some mixes. There's a more dramatic dip throughout the low to mid-treble range that can veil the finer details of some vocals and lead instruments and make sibilants sound dull and lispy. The following peak in the mid-treble range can give some high-notes a piercing, painful quality.

8.3
Sound
Imaging
Weighted Group Delay
0.36
Weighted Amplitude Mismatch
0.6
Weighted Frequency Mismatch
1.97
Weighted Phase Mismatch
6.66

The stereo imaging performance of these headphones is impressive. Their weighted group delay falls almost entirely beneath the audibility threshold, resulting in fairly tight bass and transparent treble. The L/R drivers are also quite well-matched in regards to amplitude, frequency, and phase response, so objects like footsteps and voices should be accurately placed within the stereo image That said, these results are only valid for our test unit, and yours may perform differently.

6.2
Sound
Passive Soundstage
PRTF Accuracy (Std. Dev.)
1.72 dB
PRTF Size (Avg.)
5.21 dB
PRTF Distance
15.01 dB
Openness
4.3
Acoustic Space Excitation
3.2

The Cooler Master MH751's passive soundstage is passable. Due to their closed-back enclosure, they don't produce an especially open listening experience, but their soundstage should still be perceived as fairly natural and speaker-like.

0
Sound
Virtual Soundstage
Head Modeling
No
Speaker Modeling
No
Room Ambience
No
Head Tracking
No
Virtual Surround
No App

These headphones don't have any virtual soundstage features.

7.4
Sound
Weighted Harmonic Distortion
WHD @ 90
0.196
WHD @ 100
0.302

The weighted harmonic distortion performance of these headphones is decent. There's some minor distortion across most of the mid-range at high volumes, but this shouldn't be too noticeable overall. Audio reproduction should be fairly clean and pure.

Sound
Test Settings
Firmware
No Firmware
Power
Passive
Connection
Wired
Codec
PCM, 24-bit, 48kHz
EQ
No EQ
ANC
No ANC
Tip/Pad
Default
Microphone
Boom

These are the settings used to test the Cooler Master MH751. Our results are only valid in this configuration.

Isolation
5.7
Isolation
Noise Isolation
Isolation Audio
Overall Attenuation
-14.12 dB
Bass
-0.99 dB
Mid
-13.14 dB
Treble
-29.35 dB

These headphones do an inadequate job of filtering out background noise. They block out very little ambient noise in the bass range, so you may likely hear the rumble of a passing truck or bus. Thankfully, they block out a decent amount of background chatter and filter out quite a bit of high-pitched ambient noise, like the hum of an AC unit.

7.2
Isolation
Leakage
Leakage Audio
Overall Leakage @ 1ft
38.33 dB

These over-ears have satisfactory audio leakage performance. Most of the leakage occurs in the mid-range, but it isn't too loud overall. People nearby shouldn't hear too much of what you're listening to if you're in a moderately busy environment.

Microphone
Microphone
Microphone Style
Integrated
No
In-Line
No
Boom
Yes
Detachable Boom
Yes

The Cooler Master MH751 have a detachable, flexible boom microphone.

8.9
Microphone
Recording Quality
Recorded Speech
LFE
20 Hz
FR Std. Dev.
0.99 dB
HFE
8245.71 Hz
Weighted THD
0.223
Gain
20.91 dB

The boom microphone has amazing recording quality. Your voice should sound clear, full-bodied, and natural, with very little in the way of distortion.

7.3
Microphone
Noise Handling
Speech + Pink Noise
Speech + Subway Noise
SpNR
22.34 dB

The boom microphone does a decent job of filtering out background noise. Teammates online shouldn't have trouble understanding you unless you're in a very busy environment.

Active Features
0
Active Features
Battery
Battery Type
No Battery
Continuous Battery Life
N/A
Additional Charges
N/A
Total Battery Life
N/A
Charge Time
N/A
Power-Saving Feature
No
Audio While Charging
No
Passive Playback
Passive Headphone
Charging Port None

These headphones don't have a battery.

0
Active Features
App Support
App Name No App
iOS No
Android No
macOS No
Windows No
Equalizer
No
ANC Control
No
Mic Control No
Room Effects
No
Playback Control
No
Button Mapping No
Surround Support
No

The Cooler Master MH751 don't have a companion app.

Connectivity
0
Connectivity
Bluetooth
Bluetooth Version
No Bluetooth
Multi-Device Pairing
No
NFC Pairing
No
Line Of Sight Range
N/A
PC Latency (SBC)
N/A
PC Latency (aptX)
N/A
PC Latency (aptX HD)
N/A
PC Latency (aptX-LL)
N/A
iOS Latency
N/A
Android Latency
N/A

The Cooler Master MH751 are wired-only headphones and aren't Bluetooth-compatible.

0
Connectivity
Non-Bluetooth Wireless
Non-BT Line Of Sight Range
N/A
Non-BT Latency
N/A

The Cooler Master MH751 don't support any wireless connections.

9.5
Connectivity
Wired
Analog Audio
Yes
USB Audio
No
Detachable Yes
Length 5.0 ft
Connection 1/8" TRRS
Analog/USB Audio Latency
0 ms

The Cooler Master MH751 come with a 1/8" TRRS cable that offers full microphone and audio compatibility with devices that have an AUX port. They also come with a Y-splitter for devices with separate mic and headphone ports.

Connectivity
PC / PS4 Compatibility
PC/PS4 Analog
Audio + Microphone
PC/PS4 Wired USB
No
PC/PS4 Non-BT Wireless
No

The Cooler Master MH751 offer full audio and microphone compatibility when you plug their 1/8" audio cable into a PS4 controller or an AUX jack on a PC.

Connectivity
Xbox One Compatibility
Xbox One Analog
Audio + Microphone
Xbox One Wired USB
No
Xbox One Non-BT Wireless
No

These over-ears let you receive audio and use their microphone when you plug their 1/8" TRRS cable into an Xbox One controller jack.

0
Connectivity
Base/Dock
Type
No Base/Dock
USB Input
No
Line In
No
Line Out
No
Optical Input
No
RCA Input
No
Dock Charging
No
Power Supply
No Base/Dock

These headphones don't come with a base or dock.

Differences Between Sizes And Variants

The Cooler Master MH751 only come in one color variant: 'Black', and you can see their label here. If you come across a different variant, let us know in the discussions so we can update our review.

Compared To Other Headphones

The Cooler Master MH751 are wired gaming headphones with little in the way of extra features. They have a versatile sound profile, a decently comfortable fit, and a detachable boom microphone that does an amazing job of making your voice sound clear and detailed. Unfortunately, they don't have any sort of sound customization features and feel a little cheaply made. If you're looking for alternatives, take a look at our list of recommendations of the best gaming headsets under $100, the best Xbox One headsets, and the best PS4 headsets.

Cooler Master MH630

The Cooler Master MH751 are better gaming headphones than the Cooler Master MH630. The MH751 have a better-balanced sound profile, block out more ambient noise, and leak less audio. Meanwhile, the MH630 have a slightly better boom microphone and deliver audio a little more consistently.

HyperX Cloud Alpha

The HyperX Cloud Alpha are slightly better than the Cooler Master MH751. The HyperX are comfier, significantly better-built, and more stable on the head. Their boom microphone does a better job of filtering out background noise, though its recording quality is inferior to that of the Cooler Master. The Cooler Master also block out a little more ambient noise and have an easier-to-use control scheme.

HyperX Cloud 2/Cloud II

The HyperX Cloud 2/Cloud II are slightly better for wired gaming compared to the Cooler Master MH751. The HyperX have a more comfortable fit, superior build quality, and better microphone noise handling capability. They also have a more comprehensive control scheme via an in-line remote on their analog-to-USB adapter. Meanwhile, the Cooler Master have a more expansive soundstage as well as a slightly more portable, compact design.

Logitech G Pro X Gaming Headset

TheLogitech G Pro X Gaming Headset are better than the Cooler Master MH751 for wired gaming. The Logitech are better-built, more comfortable, and have a more comprehensive control scheme, with call and music management functions. They're also compatible with Logitech's G HUB companion software, which offers a very broad range of configuration features. Conversely, the Cooler Master deliver audio more consistently and are a little more compact.

HyperX Cloud Stinger S

The HyperX Cloud Stinger S are superior to the Cooler Master MH751 in most ways. The HyperX are better-built and have a more comfortable, stable fit, not to mention compatibility with a companion app that offers an EQ and a microphone adjustment function. The Cooler Master block out more ambient noise and leak less audio. Their boom mic also delivers superior recording quality but doesn't do as good a job when it comes to isolating speech from background noise compared to the HyperX.

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