<p>Input Power: DC DC6.5-15V (see the required output power setting), power adapter, switching power supply, battery can be, the recommended use of current in more than 3A.</p> <p>Bass output power: maximum 25W, 4-6 inch, 4-6 Ohm 20W subwoofer is recommended.</p> <p>Left and right channel output power: 6W+6W, it is recommended to use 2-4 inch, 4-8 Ohm 3-25W full frequency speaker.</p> <p>The above power requires about 13.5V power supply.</p> <p>The left and right channels use a low-power enthusiast audio dedicated chip YD1517P as an output stage, which really provides high quality results.</p> <p>Potentiometer shaft center distance: 24mm potentiometer mounting hole diameter needs 7mm.</p> <p>Input interface: 3.5mm socket.</p> <p>Channels: 3 (2.1)</p> <p>Type:Home Amplifier</p> <p>Due to different batches, there may be differences in product appearance and printed text, which will not affect use.</p> <p>Colour:Green</p> <p>Material:plastic</p> <p>Package Contents:</p> <p>5 x Amplifier board</p> <p>10 x knobs(color send randomly,cannot choose the specified color)</p> <p>Only the above package content, other products are not included.</p> <p>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.</p>