Im buying a new rig sometime soon, and it will be used alot for upright, so it will be very neautral sounding( a clarus with either a Ea or a Raezers Edge cab). Im looking for a pre-amp that will give a P with flats a fattened tone, that I can then run through the 'flat' clarus. I've been looking at sadowsky, sans amp, aguilar, and a few others. Im looking for something similar to these stomp-box sized units. Any suggestions would be helpful, thanks.