Multitester tested for voltage. Power supply voltageEQUIVALENTto Alesis adapter for many instrument power needs with AC input120V andAC output: 9VAC and 830mA. (aka: 9volt AC 0.83A). Amperage can be higher, but never lower. Can be used with 3630 Compressor, Microverb 3 & 4, SR-16 Drum Module,D4 Drum Module,DM5 Drum Module, Nanobass, Nanopiano, Nanosynth, Nanoverb, Nanocompressor, M-EQ 230 EQ,Midiverb II & III. Please check your device for electrical requirements. Picture is generic. Shape, size or colormay differ from photo.Round barrel connector with a hollow center. Special heavy wrapping is provided to protect the prongs. S&H in the contiguous USA is $5.(insured shipping).Please see other interesting items by JGritUSPS DELIVERY TIME: As stated in the item listing, seller will drop-off your item to the USPS within 4 days of receiving cleared payment. How long it takes to deliver to your door is strictlywithinUSPS control and not within the control of seller. Please leave 5 stars for seller 4 day drop-off time. Thankyou.