Multitester tested for voltage. This is a voltage EQUIVALENT adapter for Visual Sound 1SPOT and TrueTone power supplies with the following: Input: ac 120V and Output: dc 9V 1700mA (aka: 9 volts DC 1.7 amp). Amperage can be higher, but never lower. Please check your device for electrical requirement. Please determine compatibility before bidding. Round barrel connector with a positive center. Shape, size or color may differ. Questions are encouraged. 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 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 time. Thankyou.