I recently bought a Carvin SX200 2x12 guitar combo, and experimented with the dirty channel for my bass. Let me tell you, I think this is the way to go. (For me) In the past I've owned Big Muffs, ODB-3s, SansAmps and lots of other OD/disto-devices but this method sounds way better. By having a signal from my pedalboard go into the front of my bass rig, I get "my" clean tone. Then I have another signal go to the guitar amp. I keep the clean volume on the guitar amp minimized and the dirty volume set to match my bass rig. Using the guitar amps footswitch, I toggle between them, keeping the solid low end of my bass intact and only adding distortion to the mids and highs. Also, the added volume helps to compensate for a lack of a rhythm player during solos. By no means do I think that I pioneered this approach, but it works so well that I'm surprised that more people don't do it. The cost of the extra amp is similar to the cost of a boutique pedal and the added weight and and set-up time are well worth the gain. Not really a question or problem, I just felt like sharing.