-21 Splinter features a sought-after classic distortion. An interesting combination of fuzz and distortion. In order to make the pedal work properly and quietly, we do recommend 9V DC pedal power supply with noise reduction technology. Three knobs design DISTORTION, FILTER and VOLUME, also, you can select STOCK or MOSFET clipping circuits. Select FAT to choose the nice thick tone. -21 Splinter allows users to easily change between the stock OP07DP and other popular chips. Specifications: Input Impedance: 1/4'' mono audio jack (1MΩ) Output Impedance: 1/4'' mono audio jack (100Ω) Running Current: 20mA Power: 6F22 9V Battery/ DC 9V adapter (When connecting the adapter, battery power would be cut off automatically) Dimensions: 120(L)*97(W)*55(H) mm Color: As shown Material: Metal Package Contents: 1* -21 Splinter Distortion Pedal Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.