BOSS VO-1 Vocoder Effects Pedal Modes4 modesADVANCEDVINTAGETALK BOXCHOIRBypassBuffered bypassControlsPedal switchMIC SENS switchMODE knobCOLOR knobTONE knobBLEND knobLEVEL knobIndicatorCHECK indicator (Serves also as battery check indicator)ConnectorsINPUT jackMIC jack (XLR type)RETURN jackOUTPUT jackSEND jackDC IN jackPower SupplyAlkaline battery (9V, 6LR61) or Carbon-zinc battery (9V, 6F22)AC adaptor (sold separately)Current Draw65 mAExpected battery life under continuous use (These figures will vary depending on the actual