Universal Switching AC Adapter for Audio Amplifiers DEL 12V/2A 5.5mm x 2.5mm Center Plus, Compatible with 5.5mm x 2.1mm, PSE Certified Specifications: Input: AC100~240V 50Hz/60Hz Output: DC12V/Max 2A Polarity: Center Plus Output Plug: Outer diameter 5.5φ (inner diameter 2.5φ) * 11.0mm, Center Plus (compatible with 2.1mm DC jack) This is a 12V 2A universal AC adapter. It can be used for other audio-related devices if the specifications match. Please be sure to check the device you are using it with before use. If connected incorrectly to a device that is not compatible with the specifications, the device may be damaged. If you are purchasing this for use with devices other than those listed as compatible, please refrain from purchasing if you do not have knowledge of the specifications. *The shape of the cord and the design of the main unit may differ from the photos depending on the production lot, but the function and quality remain the same. [Notes] *Please note that this product will be delivered in simple packaging. *Please note that no Japanese instruction manual is included. We ship in simple packaging to reduce the thickness. Please understand the above before ordering.