AC / DC, 2.0 / dual channel / stereo, 12V/2A when using, the output power of 15W +15W, peak up 25W +25W; Can be accessed by two 4-8ohm; 10~50W speakers: A large volume of small size; High signal to noise ratio; Upgraded version of the radiator, wider and thicker, better cooling effect; Fit for Bookshelf speakers, CRT televisions, radios, and other small amplifier