This is an original Sony AC Power Adapter, model AC-MZR55, designed to provide reliable power to compatible Sony audio products. It features an input of AC 120V 60Hz 6W and an output of DC 3V 500mA. The adapter is UL Listed for safety and made in China. It comes with a standard US 2-prong wall plug and a right-angle barrel connector for the device side. Ideal as a replacement or spare power supply for your vintage or current Sony audio equipment that requires these specific power specifications. Please ensure compatibility with your device before purchase.