Used BOSS SD-1 KEELEY MOD Effect Pedal

The used BOSS SD-1 Keeley Mod Overdrive Pedal delivers rich, dynamic tone with enhanced clarity and response, thanks to Keeley’s professional mod. Featuring asymmetrical clipping and a versatile tone control, it provides smooth, warm overdrive perfect for blues, rock, and beyond. This compact pedal is in great condition and runs on a 9V battery or standard power supply. Get the classic SD-1 sound with upgraded components and improved tonal detail for the discerning guitarist.