I have repaired one of my 803's and it sounds just like the other two. There is no magic involved. The amps are pretty staighforward. The components are available.
The Older Bedini 150/150 Mk2 used to have output devices that were modified at the factory. The tops of the devices were ground off and a damping material was put in them. In that case the devices would have to come from Bedini. The 803 uses Motorola devices that are unmodified.
The Older Bedini 150/150 Mk2 used to have output devices that were modified at the factory. The tops of the devices were ground off and a damping material was put in them. In that case the devices would have to come from Bedini. The 803 uses Motorola devices that are unmodified.