1. The board is equipped with two water pond filter capacitors, double insurance, differential input, and the final stage of differential excitation is driven by composite pair tube current, with high output and beautiful sound quality.2. Aluminum alloy material, fan matching, heat dissipation is worry-free, very suitable for assembly and use by enthusiasts who like high- amplifiers3. The non-stage adopts composite pair tube current drive with high output and beautiful sound quality.4. The output of 150w+150w high- circuit is very strong and the sound is beautiful and pleasant5. Perfect function protection has perfect protection function to make it work normallyparameter:Channel type: 2.0 channelDouble working voltage: AC24-32VChip type: 1943/5200Overall weight 664gcolour: greenMaterial: aluminum alloy +ABSsize: 20.5x18.3x7.8CMPackage Contents: 1 * amplifier boardOnly 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.