Bought this for a project that I'm not following through with. Never been used or installed. Bartolini NTMB 2.4AP 3 band active eq. 3 knob: volume with active/passive push/pull, stacked bass/treble, mid with push/pull freq selector. Here's a link to the Best Bass Gear page where I bought it: http://www.bestbassgear.com/bartolini-preamps-ntmb.htm
Paid $155. Asking $105 shipped, $100 local Nashville area SOLD!!