The Electro‑Harmonix Hum Debugger is a unique utility pedal designed to eliminate hum from your guitar or bass signal rather than add an effect like distortion or modulation. It isn’t a traditional noise gate or suppressor—instead it uses a specialized circuit to extract electrical hum (such as 60 Hz interference picked up by single‑coil pickups) so your tone stays clear without compromising your instrument’s natural sound. The Hum Debugger offers a simple Normal/Strong switch to adjust the amount of hum removal, comes in a rugged die‑cast chassis, and includes the required 7.5 VAC power supply. When bypassed, the pedal uses true bypass switching so your signal passes through untouched.