I purchased Blackshark V2 Pro like 2 months ago and it's just sitting on my desk becoz the sidetone volume is too low.
Here's what I have done, the sidetone volume is set 100%, the volume knob is set the max volume. At this setting, I can just hear myself okay, but if the knob is set to central position, I can hear myself from the headset outside, not from sidetone.
If I'm in the game, the sidetone volume is just not loud enough, the game volume completely covered the sidetone.
I'm running latest version of Razor Central and firmware as well.