Nominal Input Level 20 dBu Input Impedance 1 M ohm Nominal Output Level 20 dBu Output Impedance 1 k ohm Recommended Load Impedance 10 k ohms or greater Controls - Pedal switch E. LEVEL knob TONE knob FEEDBACK knob S-TIME (Spread Time) knob Indicator CHECK indicator (Used for indication of HOLD, and to check battery) Connectors - INPUT-A (MONO) jack INPUT-B jack OUTPUT-A (MONO) jack OUTPUT-B jack AC adaptor jack (DC 9 V) Power Supply - Alkaline battery (9V, 6LR61) or Carbon-zinc battery (9V, 6F22) AC adaptor (sold separately) Current Draw - 53 mA * Expected battery life under continuous use Alkaline:Approx. 6 hours Carbon: Approx. 1.5 hours These figures will vary depending on the actual conditions of use.