Technical parameters:1. Supply voltage: DC 7V-15V2. Output power: 10w + 10w (8 load)3. Efficiency: 90%4. Shutdown Current: 4uA5. Quiescent current; 20mA6. SNR: 86%7. Total harmonic distortion: 5W / 1KHz / 8 ---- 0.1%8. Frequency range: 20Hz-20KHz9. Input impedance: 15K10. Output Impedance: 4-811. Amplifier board size: 30mm * 25mm * 2.5mmHow to use:1. The power supply voltage limit is 16.5V, do not use more than this voltage.2. The power supply is recommended for 12v, 3A power supply filter better3. 4-8 inch stereo speakers recommended.4. Do not short-circuit the audio output to each other or shorted to ground.5. Carefully check before electricity, ensure wiring is correct before electricity.Package Included:1 x PAM8610 Amplifier Board