For sale is my almost brand-new Bartolini NTMB 3-band 9v preamp. This is the newer and more expensive one-module Bartolini preamp. Therefore, it takes up less space the predecessor preamp. But rest assured, it sounds every bit the same. $130 shipped. PayPal only. For all of you that know about the Bartolini preamps, this thing is no exception. As stated above, this is the newer one-module version. My loss is your gain. I only used this preamp in my bass for one day and decided that a different preamp would be better suited for my particular bass. The preamp works perfectly with no issues. Controls: push/pull volume for active/passive selection, blend, treble/bass stack, mids, 3-way mids frequency selector for 250hz - 500hz - 800hz. It also has a trim pot on the module for overall preamp gain adjustment.