Used BOSS SD1 Super Overdrive Keeley Mod Effect Pedal

Used BOSS SD-1 Super Overdrive Keeley Mod pedal in great condition, delivering enhanced tone clarity, increased gain, and smoother low-end response. This modified SD-1 features classic asymmetrical clipping, improved components, and true bypass for superior signal integrity. Ideal for guitarists seeking vintage overdrive with boutique tone, it runs on a 9V battery or power supply. Compact and durable, it’s perfect for blues, rock, and anything in between.