Feature: 1. Optional Through Method: Single block effect pedal provide optional relay true bypass or FET buffer bypass 2. 2 Different Motivational Effects: Field effect transistor has two different motivational effects, very useful and practical 3. 2 Field Effect Transistors: Dual field effect transistors, the design is closest to the tone of a tube, bring more real effect 4. Excellent Performance: Input impedance for 500KΩ, output impedance is 4.7KΩ, come with excellent performance 5. Sturdy And Durable: Made of good quality metal material, easy to conduct electricity, shiny, sturdy and durable Specification: Item Type: Single Block Effect Pedal Material: Metal Color: White Input Impedance: 500KΩ Output Impedance: 4.7KΩ Product Applicable Power Supply: External 9V AC power adapter, internal negative and external positive(not included) Size(LxWxH): Approx. 94 x 51 x 53mm / 3.7 x 2.01 x 2.09in. Package List: 1 x Effector1 x User Manual 1 x Sponge1 x Hook and Loop Fastener Note: Only use 9V DC power supply, do not use 18V DC power supply.