1PC NJW0281/NJW0302 450W+450W HIFI Stereo Amplifier Board Assembled AMP Board
This is completed board.You don't need solder it.
4 Pair MJW0281/MJW0203 for one channel.
so one board has 1 6pcs transistors.
Power supply: DC 45V to 85V
Power: 2X450W (-85V @ 4 Ohms)
PCB size: 259 * 73MM
However if I was to do it over I would use a PR-800 amplifier board.
Here are some more pictures showing the progress. We are now testing it at low levels. The input jacks go through the front volume controls to the amplifier inputs. The front panel is now powered via a 1K 10 Watt resistor. The signal inputs to the front panel go through 33K resistors to the speaker outputs.