1. The power amplifier board includes a thicker volume of the heat sink at the base of the old model. It adopts circuit design, high power, good sound quality, and minimal distortion! 2. The parameters of the power amplifier board have been rigorously tested. The two channels can only be sounded by following the wiring diagram below. The user does not need to do any debugging. The board includes its own filter rectifier and heat sink. You just need to plug it in. The power former and front stage are all there! 3. Eight SANKEN chips, high-fidelity sound quality of enthusiast-grade materials, whether it is the concert or the original movie sound is clearly restored. 4. With the right combination, the sound quality of this amplifier is almost equal to thousands of professional amplifiers.<br><br>Parameter: Operating voltage: dual AC24-36V (recommended dual AC 30V or 32V). Amplifier chip: For SanKen1494 / 3858 Channel type: dual channel stereo, mono Mono Output: 800W Dual Output: 450W + 450W Impedance: 4 ohms/8 ohms/16 ohms colour: blue-black Material: plastic Size: 21.5cm x 14.5cm x 8cm<br><br>Package Contents: 1 x HIFI Audio Amplifier Board<br><br>Only the above package content, other products are not included. Note: Light 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.