Head to head cabinets

i couldn’t find anything about this after using the search function. can someone tell me where you would like to buy japan-style head to head cabinets? also, how exactly do they work, do you have to buy two separate boards (say like CPS-3) and have a CD and cartridge in each cabinet?

theres a molex adapter i beleive that splits the monitor output, so you’d wire your jamma so that buttons from both machines are on there and the audio and video wires are spliced so they can go to two machines instead of one.

no need for 2 whole cps3’s