Features:Full metal shell, durable and exquisite.3 controlling knobs and 1 switch are accurate and high sensitive.Volume knob: Adjust the output volume.Body knob: Adjust the guitar body resonance.Top knob: Adjust the gain.Mode switch: Switch between standard, jumbo and piezo mode.Output jack: 1/4" mono audio jack for signal output.Input jack: 1/4" mono audio jack for connecting guitar.True bypass footswitch and lever designed to prevent stamping on operation knobs.Specifications:Model: AROMA AAS-3Effect: SimulatorMaterial: Aluminium AlloyInput Impedance: 1M OhmsOutput Impedance: 1K OhmsCurrent Draw: 17 mA Power supply: AC Adapter 9V DC (not included)Item Size: 9 * 3.8 * 4.8cm / 3.5 * 1.5 * 1.8inItem Weight: 151g / 5.3ozPackage Size: 12 * 7 * 6.5cm / 4.7 * 2.7 * 2.5inPackage Weight: 246g / 8.6ozPackage List:1 * Guitar Effect Pedal2 * Adhesive Tape1 * User Manual (English & Chinese)1 * Hardcover Box