Audio power amplifier DC12V 2x15W 2 channels TDA7297 Features Possibility to install two 4-8 Ohm 10-50W speakers 3.5mm audio jack input Updated version of the heatsink , wider and thicker, better cooling effect Suitable for bookshelf speakers, CRT TVs, radios and other small amplifiers  Big volume in small size. High signal-to-noise ratio Operating voltage: DC 9-15V RMS power per channel: 15W + 15W Power maximum per channel: 25W + 25W Output impedance: 4-8 Ohm Color blue