Used BOSS SD1 Super Overdrive Keeley Mod Effect Pedal

Used BOSS SD-1 Super Overdrive with Keeley Mod in great condition, delivering smoother clipping, enhanced clarity, and a tighter low end for standout tone from boost to classic overdrive. Features rugged compact stompbox design, Level, Tone, and Drive controls, and standard 1/4" input/output for easy integration on any pedalboard. Ideal for pushing tube amps, tightening high-gain rigs, or adding warm, articulate grit to clean channels.