A single Boost knob sets the amount of level increase. Placed before an amp, it pushes the preamp harder for more drive and saturation. Placed before another pedal, it hits that circuit with a stronger signal.

The circuit is fully analogue and has true bypass. With just one control, the pedal is quick to set up and easy to fit on a crowded pedalboard.

The die-cast chassis is silver with the yellow LPB-1 graphic, a black knob and a red status LED. The input and the jack labelled Amp sit on the sides of the enclosure.