Features:Full metal shell, durable and exquisite.Cabinet simulator switch: Switch the 4 * 12" cabinet simulator on and off.Gain: Switch the gain between -20dB, 0dB and +20dB.GND switch: It can eliminate hum or ground loops depending on the grounding of the connected equipment.On/off LED: Indicate effects or bybass status of matchbox.Balanced output jack: XLR audio jack for balanced signal output.Input jack: 1/4" mono audio jack for connecting guitar.Unbalanced output jack: 1/4" mono audio jack for unbalanced signal output.Specifications:Model: AROMA AMX-3Effect: CAB SIMMaterial: Aluminium AlloyInput Impedance: 1M OhmsOutput Impedance: 1K OhmsCurrent Draw: 12 mA Power supply: AC Adapter 9V DC (not included)Item Size: 9 * 3.8 * 4.8cm / 3.5 * 1.5 * 1.8inItem Weight: 135g / 4.7ozPackage Size: 12 * 7 * 6.5cm / 4.7 * 2.7 * 2.5inPackage Weight: 216g / 7.6ozPackage List:1 * Guitar Effect Pedal2 * Adhesive Tape1 * User Manual (English & Chinese)1 * Hardcover Box