Cheers Martin, I've been experimenting at home with it but i realize that isn't best idea but it will give me a starting point.
I'll give that a try as i've always ran the pre-amp side up to clipping and back a notch typically 12:00 on most amps using my Jazz bass.Then control my volume using the master volume (woofer in this case) The boost is the control that confuses me thru all of this but seems best around 2:00 or 3:00 no matter what i try.
I've tried presence at 12:00 with varying levels of Contour and that's given quite a change in tones too.
Its turning out to be quite an interesting amp now that i need to use it.
The more i use it the more i like it thru my Berg HT322
Dave