Feature:1. Easy Control: Comes with a switch and 3pcs control knob, the operation of this effect pedal is much easier.2. High Accuracy: Ensuring high sensitivity and high accuracy as well, making your playing more attractive.3. Practical Use: With 2 modes to choose from, the pass through hardware ensures fair sounding effects.4. Reliable Use: The output impedance is 1k ohms, and the input impedance is 1M ohms, stable and reliable.5. Metal Shell: All metal shell with pretty yellow painting will provide good protection for effect pedal.Specification:Item Type: Guitar Effect PedalColour: YellowMaterial: MetalInput Impedance: 1M OhmsOutput Impedance: 1k OhmsProduct Applicable Power Supply: 9V DC power adapter (the product does not include a power adapter). .Package List:1 x Guitar Effect Pedal1 x User Manual1 x Hoop and Loop Fastener1 x StickerNote:Note that the positive and negative of the effect pedal should be the same as the positive and negative of the power supply.