Multitester tested for voltage. This is a voltage EQUIVALENT power version for the Audio Authority power supply Input: ac 120VAC (ordinary household wall plug outlet). Amperage can be higher, but never lower. Round barrel connector with a hollow center. Please check your Audio Authority device for power requirement before bidding. Please ask questions. Photo is generic. Shape, size or color may differ from photo. Special heavy wrapping is provided to protect the prongs. S H in the contiguous USA is $9.(insured shipping). Please see other interesting items by JGrit. USPS DELIVERY TIME: As stated in the item listing, seller will drop-off your item to the USPS within 5 days of receiving cleared payment. How long it takes to deliver to your door is strictly within USPS control and not within the control of seller. Please leave 5 stars for seller 5 day drop-off time1a/2.1mm. Thankyou.