Ultra Digital 500 Watt DLX MONO 4TR Amplifier Board, Original 2SC5200 AND 2SA1943 4 Pair Transister Used In This Board,DC24v To45v Dual Supply

Ultra Digital The BEST Audio Performance using a 500 Watt MONO 4TR Amplifier Board Dual Supply: 24 volts to 45 volts Use the Extra Performance Cooling Fan (Original Made in Japan ic) 2SC5200 AND 2SA1943 4 Pair Transister- NPN+PNP Transistor IC Based