Software

To control the Cooler Master MH752 on the PC, you can install Portal, their official software driver. It's a fairly rudimentary piece of software offering one truly useful feature—a system-wide equalizer. You can use it to adjust the sound output of the headset to your liking, and you should definitely use it to boost the bass (the 64 Hz and 250 Hz slider in the equalizer; don't go overboard with the 250 Hz slider as that's roughly where the bass ends and the low midrange starts). It's possible to use a couple of Cooler Master's own sound profiles (Gaming Bass+, Movie, Pop Music) or create and save your own. It's nice that they included simple bass and treble sliders for less experienced users who don't want to bother with adjusting individual frequencies—not that there's a lot of them to adjust.

Aside from that, the Portal software driver can be used to turn the 7.1 surround sound on and off and to adjust the volume of the headphones and the microphone. Until I flashed the firmware of the MH752 to the latest version, which is done by running an EXE file available on Cooler Master's official website, the Portal software didn't detect the MH752. In case you run into a similar issue, make sure to flash the headset's firmware first.