Used BOSS KEELEY MOD SD-1 OVERDRIVE Effect Pedal

Get gritty, touch-responsive drive with this used BOSS/Keeler MOD SD-1 Overdrive pedal, a classic SD-1 enhanced for added clarity and punch. In fair condition with noticeable cosmetic wear, it’s ready to deliver that familiar mid-hump warmth for blues, rock, and boosted lead tones. Features include Level, Tone, and Drive controls, standard 1/4" input/output, and typical Boss compact-pedal ruggedness—perfect for shaping amps, stacking with other drives, or tightening high-gain rigs.