1. Use high-quality materials, quality guaranteed<br> 2. The PCB circuit board size is reduced, the component layout is more reasonable, and the product service life is increased.<br> 3. The left and right channels use a low-power audiophile-grade dedicated audio chip TDA1517P as the output stage, which truly provides high-quality effects.<br> 4. Stable performance, high-fidelity 2.1 three-channel super bass 12V audio amplifier board<br> 5. Wide range of applications, small size can be easily embedded in various occasions<br> Power supply: DC6.5-15V (depending on the required output power), power adapter, switching power supply, or battery. The recommended current is above 3A.<br> Bass output power: maximum 25W, it is recommended to use a 4-6 inch, 4-6 ohm 20-50W subwoofer<br> Left and right channel output power: 6W+6W, it is recommended to use 2-4 inch, 4-8 ohm, 3-25W full-range speakers<br> The above power requires a power supply of about 13.5V<br> Potentiometer distance: 24mm. The diameter of the potentiometer mounting hole needs to be 7mm.<br> Input interface: 3.5mm socket<br> Note:The color of the knob is random and cannot be specified.<br> Colour:Green<br> Material:PCB+components<br> Package Contents:<br> 1 * Amplifier board with Knob<br> Only the above package content, other products are not included.<br> Note: Light reflection 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.