Hey Guys, I bought this Mike Pope on board preamp from a person by the user name of Funkometer on this site. I had a luthier project going on where I was going to install this pre, but the project never materialized. So this preamp was just sitting in my bubble wrap bag for a few years. Specs are: Config is vol/tone,blend,treb,bass and passive/active switch. Tone works in passive and active. 18v, 40Hz bass and 4kHz treb . I lost the wiring diagram but Mike Pope can email it to you if you visit his website Mike Pope designs. I would like $400 or OBO. I will throw in free shipping. I accept paypal. See attached for pic. -Andy