My mic has a hiss at the beginning of me talking and at the end of me talking. It doesn't seem to be prominent while I talk, but only when I start and stop.
Here's a sample I clipped from my last stream:
https://clips.twitch.tv/AttractiveBoringAsparagusPrimeMe
Here's a sample I clipped from my last stream:
https://clips.twitch.tv/AttractiveBoringAsparagusPrimeMe