I bought a pro-4svt, but was very disappointed when I tried biamping. May want to do some trading, I've got a lead guy w/ a 50wt marshall covering me up?
one might guess that the louder amp is the one you turn up more.
but then again, I know nothing about, and care very little about any gear. And you have failed to read the sticky at the top of this forum clearly stating that I don't (because I really can't..) answer any gear questions like that.