I believe the part# you're looking for is MB3730. This was used on many different game PCB's. Below is a small list....
Sound amp for the following games.... Galaga, Super Pac-Man, Rally-X, Tron, Satan's Hollow, Wacko, Kickman, Solar Fox, Dominio Man, Journey, Tapper, Timber, Capcom Bowling, Pole Position I and II
Hope that helps!
Doug |