10W class-D stereo audio amplifier,10W(left channel)+10W(right) output power into an 8Ω speaker load and 12V power supply – Offers low THD+N, high-quality sound reproduction, high efficiency: 90% – Operate on any voltage from 7.5V to 15V, conveniently powered with a 9V or 12V power supply or battery – High efficiency but low cost achieved by CMOS class D amplifier design – For DIY design, requiring a miniature audio amplifier, portable and mobile applications operating on battery power Specification: – Size: Approx. 40 ×40 ×22 mm/ 1.57 ×1.57 ×0.87 inch, including volume control knob – Volume control potentiometer shaft diameter: Approx. 6mm/ 0.24 inch – Output power: 10W+10W, 8Ω – Frequency response: 20Hz to 50KHz – Amplifier class: D – Operating voltage: 7.5 – 15V DC – Recommended supply voltage: 12V, the connector center PIN is + – Quiescent Current: 20mA – Speaker Load: 4-8 Ohms, 8Ω recommended, screw terminal connectors – Noise canceling circuit built into the amplifier board – Screw terminals for easy speaker connection – no soldering needed – No popping noise when Power on/ off – Power switch and mute switch connectors and volume control potentiometer – Short-circuit current protection: under-voltage lockout and over-temperature protection (shuts down at an internal temperature of 140C±15C)