Miscellaneous
Koolenry DX-800A Digital Amplifier Board 800W Mono High Power Professional Amplifier Professional 2SA1943 2SC5200 Finished Amplifier
Model: switching power supply board Size: 25X13.5X5.5cm Maximum power per channel: 800W Working voltage: dual AC24-45V Applicable: suitable for low-power digital amplifiers and analog amplifiers
https://www.bizrate.co.uk/miscellaneous/koolenry-dx-800a-digital-amplifier-board-oid40436679058.html
