I have for sale or trade a Bartolini NTBT Preamp all wired up and ready to go. This came in a Roscoe I bought from a TBer, I am a Demeter preamp man so I pulled it out. The Preamp is currently wired for 18 volts but can be rewired for 9 volts. Here are the control functions: Volume/Active/Passive Push-Pull switch Blend Bass/Treble Stacked Passive Tone Control The Green and White wires are the pickup Hots and the Black is the ground. I am asking $75 or trade for an Aggie OB3 4 pot preamp, a Delano 3 band 4 pot preamp or maybe some other cool stuff.