Club gig was only about an hour, I play the same spot every week. There's a speaker very close to my head and the volume of the headphones just wasn't cutting it. I could hear it but just barely. The sound quality was amazingly great, extremely clear - very nice on the low end. I usually use SSL running through a Pioneer 909 and this was noticeably better. I tried using the microphone and the latency is terrible you just have to spit out what you need to say and try not to listen to yourself. - Second gig was a small house party. Everything ran fine but there seemed to be some sound dropouts at one point. I never saw a usb light come on.

Knobs, hard to see what position they're in. The red markings disappear in the dark. You just have to feel around for the notch.

Gain - VCI-300 doesn't really give you that extra bit of volume you might need for a softer song. Running the VCI-300 into another mixer that would be able to push the sound a little more if you need it is pretty much necessary - especially if you need to use a mic. Using SSL I could always adjust the the internal gain as a last resort if I needed it.