I play electric bass with a few groups, and there are many times an upright string bass thump would be welcome. 10-piece (6 horns) swing band, and some small combos (drums optional), playing American Songbook standards. Guys ask me eagerly "Do you play upright?" I mostly play an Epi Viola Bass, GHS flatwounds, mixed pick and fingers, through a Fender Rumble 200, also have a Gibson SG bass and a P-Bass in reserve. Is there an effect out there to emulate string bass?