Hey Jan,
I use two basses pretty much all the time, my fretted Elan and my fretless Roscoe. I am using a Mesa-Boogie Basis 2000 head which has two separate preamp sides. One is a tube pre the other is MOSFET. The head has a foot switch that allows me to switch between either side, combine both, engage/disengage graphic EQ, and mute. It really cranks too, 600-watts RMS at 8omhs/peaks at 2000-watts, and it weighs way less than the 400+ head that Mesa makes. I really love it because its like having two amps in one and makes balancing the two basses very easy. The only draw back is the fact that Mesa doesn't make that amp anymore, also it was fairly expensive when i bought it new ($1,795) not including the 4x10in and 1x18in cabs that I use. If you can find one I would suggest trying it out.
Later, Matt
(Message edited by bassplaynmatt on December 02, 2003)
(Message edited by bassplaynmatt on December 02, 2003)