there is only one 2 player jamma cyberball pcb. Its tournament and the sound board attaches directly to the pcb. If you need a pic of the pcb, I can take one, but mine is not for sale.
Hmm, I see. Is it like the 4 player midway boards there you can make it a 2 player machine through dips? If so, then I guess it doesn't matter if I get a 4 player board.
4 player pcbs are NOT jamma. here is a pic of the 4 player board. it would be like wiring up gauntet but more work.. plus output is to 2 monitors.
Also the 2 player pcb is 2 vs computer. NOT head to head... Thats a deal breaker for most people. If the computer beats you, you probably need to find another hobby..
here is a pic of tournament cyberball pcb in dedicated cabinet. just so you know, thats a regular cyberball pcb upgraded to torunament(daughter card on the main board)
the jamma 2 player pcb looks a little like a hydra pcb. Here is a pic of hydra: