Features: 1. PAM8610 imported chip. 2. It can output 10W+10W power under the condition of 12V power supply. 3. No need for heat sink, but also protection against overheating, overcurrent, etc. 4. Specially suitable for music lovers for DIY. 5. Excellent quality and durability. Specifications: Supply voltage: DC 7V-15V Output power: 10w + 10w (8 loads) Efficiency: 90% Shutdown current: 4uA Quiescent current; 20 mA Signal to noise ratio: 86% Total harmonic distortion: 5W / 1KHz / 8 - 0.1% Frequency range: 20Hz-20KHz Input impedance: 15K Output impedance: 4-8 Amplifier board size: Approx. 30*25*2.5mm/1.18*0.98*0.1inch How to use: 1. The power supply voltage is limited to 16.5V. Do not exceed this voltage. 2. Power supply recommended for 12v, 3A power supply filter. 3. It is recommended to use 4-8 inch stereo speakers. 4. Do not short-connect the audio outputs to each other or to the ground. 5. Check carefully before powering on, make sure the connection is correct before turning on the power. Package List: 1 * PAM8610 Amplifier Board 1、PAM8610 imported chip. 2、It can output 10W+10W power under the condition of 12V power supply. 3、No need for heat sink, but also protection against overheating, overcurrent, etc. 4、Specially suitable for music lovers for DIY. 5、Excellent quality and durability.