Features: Wide range frequency response blues style overdrive sound, also sounds good on bass. Supports 2 working modes: Bright & Fat. With output volume, tone and gain adjusting knobs. True bypass footswitch for switching effects and bypass. LED light for indicating effects or bypass status. Full metal shell, durable and sturdy. Effects Explanation: Bright-- Transparent tube-like overdrive tone Fat-- Add a bit of natural low end to get a rich and vigorous sound Specifications: Material: Metal Signal Input: 1/4″Monaural Jack (impedance: 1M Ohms) Signal Output: 1/4″Monaural Jack (impedance: 1k Ohms) Power Supply: DC 9V adapter (center minus plug) Working Current: 14mA Item Size: 3.5 * 9 * 3cm / 1.4 * 3.5 * 1.2in Item Weight: 150g / 5.3oz Note: The power adapter is not included. Please use the power adapter whose polarity is positive pole outside and negative pole inside. Otherwise, the product may not work properly. Package List: 1 * Effect Pedal 1 * User Manual(English & Chinese)