I use the WA Bus Comp for tracking duties. I find the VCA circuit is very good to reduce the peaks and boost the quiet parts, so I get an even signal. Also the transformers give the recording some warmth that is subtle, nice and smooth. To be honest, I tried it as a master comp, and it didn't do much in my setup, not enough to go out of the computer and back in, but it stays as a tracking unit. The pots is a little hard to dial, but all in all it is a very practical processor for me. Great price for an outboard unit like this, I would buy it again.