Welcome, you are looking at a great piece. This is the Electro-Harmonix Hum Debugger! Though a very simple idea, this pedal is fantastic for anyone who prefers single coils on their guitars. This is not a noise gate or noise supressor. This pedal extracts the 60-cycle hum that plagues single coils. Plug this in and enjoy all the tone and bite of single coils with the quiet operation of humbuckers even at high gain settings. We are an authorized Electro-Harmonix dealer. Don't pass this by!