The Maxon SD-9 Sonic Distortion is a versatile distortion pedal offering a wide range of tones, from overdrive to fuzz, with a unique low-end boost. It's prized for its transparent operation and ability to provide up to 42dB of gain. The SD-9 is known for its full-frequency response and minimal tonal coloration. Perfect for players seeking more than just distortion from a pedal.