Microphone Performance

The microphone of the Cooler Master MH670 was tested by connecting it wirelessly to my PC. To find out if it performs differently wired, I also tested the microphone with the analogue connection.

To review the microphone's sound and compare it to other similar headsets, I used the Adam A7X speakers and Shure SRH840 headphones (both fall into the studio monitor category). I connected them to Audiolab's M-DAC, a high-quality digital-to-analog converter that functions as an external sound card when connected to a PC. Testing was done in Discord, Skype, and Audacity, and I also used Audacity to record the sound from the microphone. The sound was recorded with microphone sensitivity set to 100% and was not post-processed or edited in any way.

For reference, this voice recording has been made with the Rode NT-USB, a high-quality studio microphone:



This is the sound recorded by using the omnidirectional microphone the Cooler Master MH670 is supplied with:



Microphone quality is decent. My voice is audibly compressed, although not extremely telephonic; some depth and warmth is present. Your friends will have absolutely no trouble understanding you. However, much like most other wireless gaming headset microphones, this microphone isn't suitable for more demanding usage, such as live-streaming or voiceovers. For direct comparison, here are the microphone samples of some other popular wireless gaming headsets.





As you can easily hear, the Corsair Virtuoso RGB Wireless has by far the best microphone of the bunch. The microphones of the SteelSeries Arctis 1 Wireless and HyperX Cloud Flight sound thinner but also airier. Choosing between them will be a matter of personal preference; all of them do a good job of delivering your orders to your team and can't really be used for anything more serious than that.

To check how much of the built-in microphone capsule quality is lost because of the wireless connectivity, I connected the Cooler Master MH670 to an external USB sound card (Creative Sound Blaster X3) with a 3.5-mm audio cable and a 3-pole TRS splitter cable I had laying around.



My voice sounds much less processed, it's airier, and the compression is gone. There's no artificially added depth, either. As expected, in this case, the microphone performs significantly better than it does in wireless mode.