How many people use theirs in combination with a bass amp? I've read posts about running them into the effects return jack. I tried this on my SM-400 and it was MUCH LOUDER than I expected. Also, there's quite a bit of hum (reasonable from past experiences with it). However, I found out that the Master Volume dial on my SM-400 no longer does anything. Anyhow, so I figured I'd run the BDDI without the preamp boost, and use it like a stomp box through the front input. So a few questions: 1. Should I use the BDDI as a stomp box or a pre-amp? 2. If I were to use it as a stomp box, would it be a bad thing to run the signal through the SWR's pre-amp? Should I set my EQ to be completely flat? Would I use the passive or active input? (To be honest, I LOVE the SWR's pre-amp section, but the convenience and versatility of the BDDI is inexpendable to me.) 3. If I were to use it as a pre-amp, is there any way I can control the volume from my SM-400? Any way I can lessen the hum? Thanks!