Well my search for a tube-sounding amp is now over. I went to GC today and came home with a Mesa-Boogie Bottle Rocket preamp pedal. It's a guitar pedal, but it does exactly what I want it to. While it doesn't have 3 channels like it's bigger brother the V-Twin, with the turn of the gain knob I have access to all the sounds I need. New gear is so fun!