Features:Smart direct input box with ultra low distortion, it quietly transfers the sound of guitar or bass directly to the audio system.With XLR balanced/ 1/4" unbalanced output, and supports 4 * 12" cabinet simulation and ground lift functions.Gain switch for boosting low level signal: -20dB/ 0dB/ +20dB.Micro size and full metal shell, portable and durable.With LED light for indicating the working status.Specifications:Material: MetalSignal Input: 1/4″Monaural Jack (impedance: 1M Ohms)Unbalanced Output: 1/4″Monaural Jack (impedance: 1k Ohms)Power Supply: DC 9V adapter (center minus plug)(not included)Working Current: 12mAItem Size: Approx. 3.5 * 9 * 3cm / 1.4 * 3.5 * 1.2inItem Weight: Approx. 135g / 4.8ozPackage Size: 10.5 * 6 * 4.5cm / 4.1 * 2.4 * 1.8inPackage Weight: 155g / 5.5ozNote: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 Pedal1 * User Manual(English & Chinese)