Product Description Product Features Full metal shell, durable and exquisite. 3 controlling knobs and 1 switch are accurate and high sensitive: Mix Knob: Adjust the ratio between dry signal and wet signal. Bit Knob: Adjust the range of sampling depth reducing. Crush Knob: Adjust the range of sampling rate reducing. Mode Switch: Switch between low pass, high pass and normal 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 AMO-3 Effect: Bit Crusher Material: Aluminium Alloy Input Impedance: 470K Ohms Output Impedance: 100 Ohms Current Draw: 68 mA Power Supply: AC Adapter 9V DC (not included) Item Size: 9 x 3.8 x 4.8 cm / 3.5 x 1.5 x 1.8 in Item Weight: 149 g / 5.2 oz Package Size: 12 x 7 x 6.5 cm / 4.7 x 2.7 x 2.5 in Package Weight: 242 g / 8.5 oz Package Includes 1 x Guitar Effect Pedal 2 x Adhesive Tape 1 x User Manual (English & Chinese) 1 x Hardcover Box