Original, untested Atari System One Regulator / Audio III, Rev B. arcade game power supply board from 1984. Note that the sound pot (R1) is broken on this board, we found it this way and don't have a replacement handy. Board is otherwise complete and in good condition. Assume it may need some rebuild work. Sold as-is.
We believe this one was used on System 2 games (such as Paperboy, Championship Sprint, etc.). Original Atari Part # 043047-01 / A043046.
This is the version with the test switch and volume pot.
