ITEM NAME:AC/DC 9V-15V/12V 15W+15W TDA7297 Version B Dual Channel Amplifier Board Mod A4W5 AC/DC 9V-15V/12V 15W+15W TDA7297 Version B Dual Channel Amplifier Board Mod A4W5 Dimension: 50x50x42mm (length x width x height, excluding potentiometer handle), ultra-small size suitable for any space. Voltage: DC 9-15V, recommended DC voltage 12V, current 2A above Power: 15W +15 W Output Impedance :4-8Ω Upgraded version of the radiator, wider and thicker, better cooling effect Weight: 50g This is a 12V single power supply TDA7297 amplifier board B board, AC / DC, 2.0 / dual channel / stereo,12V/2A when using, the output power of 15W +15 W, peak up 25W +25 W, can be accessed by two 4-8Ω10-50W speakers, a large volume of small size, high signal to noise ratio. Package Contents:1 x TDA7297 Version B Amplifier Board Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.