New Upgraded Version Mono 400W Tube 2SC5200+2SA1943 20V-90V HiFi High Power Audio Amplifier Board with Speaker Protect

About this item Mono: Digital power amp board for mono post amplifier board, if you need dual channel please buy 2pcs Amplifier board size: 195X60X45 MM length * width * height Real power: undistorted power 400W, maximum power 600W. Power supply: dual voltage, DC positive and negative 20-90V (upgraded version has optimized the circuit and parts, can To directly apply high voltage, it is recommended to use a voltage below 90V and not challenge the voltage limit Package Included: 1pcs 400w audio amplifier board With Speaker Protect