Class D power amplifier board with ultra-low distortion of 0 02% Fever grade material craftsmanship, rigorous design, precision production of ultra small volume with fever grade materials Power amplifier type: Class D fever digital power amplifier board Power amplifier chip model: TI high-level TPA3221DDDVR high-definition Class D power amplifier IC : 108dB Distortion:less than 0 02% +N 1KHz Gain: 30dB Support speaker impedance: 4-8ohm Output power: maximum output power 2 * 60W Number of channels: 2 channels Stereo: Power supply voltage/current: DC voltage 9V-17V, current 3A or above (charger may not function properly, please use a power adapter Or switch power supply) input: physical interface HX2.54 Size: 80mm long, 39 wide 5mm Colour:As Shown Material:PC The actual product may have slight color difference or difference, which not affect the use Package Contents: 1 * amplifier board Only the above package content, other products are not included. 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.