. Compressor Pedal Guitar Pedal. Power Supply: 9V DC (not included in this package). Sustain:Adjust the sustain. Attack:Adjust pedal start time. LED Light:LED indicator shows the working state. Input & Output Jack: Single ¼ inch (instrument cable). Level:Adjust the volume. True Bypass: minimizes tone loss. Specifications. Input Impedance: 500 KΩ. Output Impedance: 10 KΩ. Running Current: 8 mA. Power: DC 9V(not included in this package). Dimension: 92(L)×42(W)×52(H)mm. Net weight: 138g. Package included. 1 Pcs Compressor Pedal....