Threshold control: Variable from – 30 to 10 dBu Slope control: Variable from 2: 1 to infinity Attack control: Variable from 10ms to gd-100ms-1dr Level control: – infinity to – Diode: 3dBu Low distortion: (<0.2%) Power: Nine Volt Battery or optional universal power supply Heavy Duty Steel Construction battery life > 100 hours Inputs: One 1/4" Jack otputs: one 1/4" Jack Controls: Engage switch Optional: 9 Volt Power Supply