This is the older 3 way NTMB with 4 knobs. I had this laying around and totally forgot about it. Haven't had a 4 knob bass in a while. 1 or 2 Pots are scratchy but preamp works fine. $75 outright sale shipping included in the CONUS. Vol w/ active passive / Mid / Bass / Treble. This also has the selector switches for mids and gain control.