I do not which one to pick. I will be using a Crest CPX900 amplifier and an Epifani 4x10 cabinet. My main bass is a Lakland 55-94 with Seymour Duncans. I am fingerstyle funk player who does a little slapping. I am looking for this preamp to thump, but with clarity. I am currently playing a SWR 750 with a SWR 2x10 Goliath Jr. and 1x15 Son Of Bertha. I hope this helps. Thanks for your time.