Mid-size modular matrix intercom. Sleek design provides 128+ ports in an extremely compact 3RU (rack unit) package, with full redundancy of the master controllers and power supplies. Matrix frame supports all current ADAM cards, including AIO-16, RVON-16, MADI-16 Plus, Tribus and MCII-e controllers. Also supports existing ADAM wiring schemes and options. Built for world wide use, chassis plugs-and-plays anywhere, running on 90 to 264Vac at 50/60Hz.