Multitester tested for voltage. This is a voltage EQUIVALENT adapter for Altec Lansing power supply regulator, power supply with an INPUT: AC 120V and OUTPUT: 15V DC 800mA. Round barrel connector with POSITIVE center. Power Supply for ACS90 and GCS100 model speakers and other multimedia devices. Please check your device requirements before purchase. Photo is generic. Adapter shape, size and color may differ slightly from photo. Questions are encouraged. Special heavy wrapping is provided to protect the prongs. S H in the contiguous USA is $8.(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.