The Cooler Master MH751 are basic wired gaming headphones. They have a 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.
The Cooler Master MH751 are very good 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.
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.
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.
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.
The Cooler Master MH751 are wired-only and can't be used wirelessly.
The Cooler Master MH751 are good for wired gaming. They have a 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.
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.
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.
Update 11/30/2021: After receiving user comments regarding the headphones' loose adjustable headband, we have subjectively reassessed the scoring of this box. For the most part, our testers didn't experience issues with the headband. However, if you have a small head, the loose hinges may still be a problem for you, although you may not experience it each time you use the headphones. We have updated our review to reflect these changes.
The Cooler Master MH751 are 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. If you wear glasses or like wearing a hat as you game, they also may not provide a consistent seal against your head.
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.
The Cooler Master MH751 aren't very portable. Like most gaming headphones such as the Turtle Beach Recon 500, they're quite bulky and can't fold into a more compact design. On the upside, their boom mic is removable and their ear cups swivel flat, which slightly reduces their footprint.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
These headphones don't have any virtual soundstage features.
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.
These are the settings used to test the Cooler Master MH751. Our results are only valid in this configuration.
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.
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.
The Cooler Master MH751 have a detachable, flexible boom microphone.
The boom microphone has amazing recording quality. Your voice should sound clear, full-bodied, and natural, with very little in the way of distortion.
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.
These headphones don't have a battery.
The Cooler Master MH751 don't have a companion app.
The Cooler Master MH751 are wired-only headphones and aren't Bluetooth-compatible.
The Cooler Master MH751 don't support any wireless connections.
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.
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.
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.
The Cooler Master MH751 are wired gaming headphones with little in the way of extra features. They have a versatile sound profile, a 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.
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.
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.
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.
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.
The HyperX Cloud Stinger S are superior to the Cooler Master MH751 in most ways. The HyperX are better-built and have a more 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 a better overall performance.
The Beats Solo Pro Wireless are better for most purposes than the Cooler Master MH751. The Beats are truly wireless headphones with ANC. They have a much better build quality and a more bass-rich sound profile, which some may prefer. They're also less prone to inconsistent bass and treble delivery. On the other hand, the Cooler are wired over-ear headphones with a much better passive soundstage performance. Also, their detachable boom mic has a much better overall performance than the Beats' integrated microphone.