I've searched and haven't found the answer. Here's my setup: SVT 4-Pro SansAmp RPM Pedal board SSVT 810E What I would like, and I am not sure that it is at all possible is this: I'd want to run the top and the bottom of my 810E separate (so 410 and 410. One being a dirty channel only coming from the SansAmp, another being the clean channel and having the pedalboard effects running through it. Is this at all possible? Or am I fantasizing about something that simply can not be done? I know that the 4-pro can be bi-amped, but last time I tried doing so it ended up in disaster (87 parts later...). Thanks in advance!