The mix knob controls how much of the compressor is going back into the signal to the board. I just leave it at 100%. Sounds good enough there and works.
Though, I must say, after using this comp more and more it's really growing on me. Who knows, maybe Ill buy one or 2. It really impresses me, and for the money it cant be beaten. It seems to be up to any task, little or small.
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Im going to try it on bass guitar this weekend. Ill report back and tell you how much it rocked there too.
Also, Ive been fooling around with it here at my house and Ive gotta say it works great on my TV too.
I cant stand the ~20db difference between some channels, so I had it inserted between my VCR and home theatre system and it rocked. All the levels were the same and I wasn't constantly adjusting the volume from channel to channel. But, thats off topic.
I also ran some tests here at home with my voice. Using an sm58 and some headphones I played around with it. Full compression, and it still sounds fine. Ive gotta admit, its about as good, if not better sounding then my dbx 1046s! Too bad theres no brick wall limiter on it. Once or twice I was able to get past the comp and clip the channel on my mixer. But, hopefully you wont be running things that hot at your gigs.
Thats all for now!
Evan