The Mooer MEP-BS Black Secret micro Distortion effect pedal packs an incredibly BIG sound into a very small package. The Black Secret captures the legendary “Rat” sound in a micro pedal. Two modes selectable via a 2 Way Switch give the flexibility to switch between a warm, smooth, vintage distortion sound and the turbo mode that gives more than twice the maximum output of the vintage mode, for a more powerful distortion sound. The Black Secret uses the classic LM308 chip. Product Details: 2 Way Switch: Vintage / turbo Level: Distortion level control Filter: Filter control Distortion: Distortion control The pedal switching is true Bypass, so the sonic integrity of your instrument is never lost. Rugged ?Full metal Casing and quality switching in a small and exquisite design.? Dimensions (HxWxD) 03.5 X 42 X 52 mm Requires a 9 Volt Centre Negative power supply for operation (not supplied). Suggested model Crossfire CAP-1