I had this preamp made for me by Mike Pope, but I never got around to putting it in one of my basses. Pre is MINT. Config is vol/tone,blend,treb,bass and passive/active switch. Tone works in passive and active. 18v, 40Hz bass and 4kHz treb . Im sure Mike could reconfigure the pre if needed. $375 shipped usa. Ill trade for an Enigma Q-Balls or Boss RC2+cash.