Regulator / Audio III Board, Working

Original, tested and working Atari System One Regulator / Audio III, Rev A. arcade game power supply board from 1984. It is used in System 1 games such as Marble Madness, Road Blasters, Indiana Jones and Road Runner.  Board will also work on System 2 games (such as Paperboy, Championship Sprint, etc.), but we believe those games had a volume pot and test switch installed on the board. Original Atari Part # 043047-01.

This is the version without the test switch and volume pot.