Single Channel Bass pre-amp - Mosfet* pre-amp capable of up to 25db of gain per channel. Features true hardwire bypass. Operates on battery or negative center DC power supply (not included). *Mosfet-Metal Oxide Semiconductor Field-Effect Transistors...

Bass Overdrive/Pre-Amp - Two channel bass effect consisting of a pre-amp and an overdrive which may be used independently or combined. Specially designed circuit lets original bass tone to pass through without affecting the low end. Controls...