Closer Examination, Build Quality and Comfort

As soon as you take the Cooler Master MH650 out of the box, its extreme flexibility becomes apparent. You can literally bend it in any direction your heart desires without it ever creaking or showing any other signs of poor build quality. Both ear cups are affixed to a pair of joints and can be rotated inward by up to 90°, which is a welcome feature as it helps you hang the headset around your neck or set it flat on a table. Such high flexibility results in terrific adjustability regardless of head size. With that comes fantastic wearing comfort. This is indeed one of the most comfortable headsets on the market. It can be worn for many hours at a time and will never hurt your ears or press against the sides of your head too tightly. Straight out of the box, the clamping force is a bit higher than on the wireless MH670, but after wearing it for a couple of hours, the headband loosens up, which has the whole thing become just as comfortable.


The inner side of the headband is nicely padded and covered with mesh fabric. A combination of mesh fabric and memory foam is also used for the ear cushions. Both of those parts of the MH650 are very soft and well made, further adding to its excellent comfort.


The left and right ear cup are marked with their respective symbols printed inside the ear cushions. The ear cushions are completely removable. If you're not into mesh fabric, you can simply replace them with a different kind of material. The wireless MH670, for example, comes with pleather ear cushions (the inner side of its headband is also covered in pleather). That gives it better passive noise isolation, but also causes more heat to build up around the ears. In terms of sound quality, I didn't notice any significant differences between those two types of ear cushions. That's not to say that the MH650 and MH670 sound the same—they definitely don't.


The outer headband, cup hangers, and ear cups are made out of dense plastic. For the most part, Cooler Master decided to keep the design as clean as possible, although they didn't resist the urge to add a bit of RGB bling. As you can see in the photo, an oval RGB light strip has been put on both ear cups. It's of course fully adjustable, so nobody is forcing you to have it on. When the RGB lighting is off, the MH650 looks stealthy and nice.


The height of the headset can be adjusted by sliding the ear cups up and down the inner frame, which is made out of metal. There are no markings that would help you adjust both sides equally, but you can hear distinct "clicks" when changing the height, so you could simply count them—not that it particularly matters.


On the lower edge of the right ear cup are two buttons. One turns on the 7.1 virtual surround sound and the other cycles through the RGB modes: alternating, static, pulsating, and off.


Other controls are on the lower edge of the left ear cup. Here, we have an analogue volume dial and a microphone mute button.


The left ear cup also contains the microphone connector, tucked away behind a rubber cover. I'm not a big fan of this solution. While the rubber cover protects the connector, it also makes the headset look uglier whenever the microphone is plugged in as the cover can't be removed—it just hangs there, leaning against the microphone plug. I seriously doubt there are that many users who will use their gaming headset as their mobile headphones; most people will leave the microphone permanently connected. It's a mistake to cater to such a minority.


The microphone arm is covered with a series of metal rings that make it easily bendable yet very stable. The microphone capsule doesn't come with a pop filter, which would be a nice touch and a cheap way to make the headset look even more professional.


If you want to connect the MH650 to a mobile device, you definitely can because of the supplied USB-A to USB-C adapter. As long as your device has a USB-C port, you can use this adapter to connect the headset to your device. The adapter has an angled USB-C port.