It's more than good enough for stuff like gaming sessions, Let's Plays, etc. Being very pedantic about mic quality, I have found that the microphone is VERY slightly worse than my previous one in terms of things like "ss" sounds, but the difference is absolutely tiny. Literally, if it weren't for me saying "Testing" for 30 minutes straight with each mic, I wouldn't have been able to tell the difference!
Much like the headphones themselves, the microphone seems set up to very nicely replicate bass sounds. Really, that was a tiny complaint. Get them and you will not be disappointed.