Clear-Com MS-704 Encore 4-Channel Main StationThe MS 704 is a 2RU four channel main station with programmable front panel buttons, individual channel short circuit protection, individual channel volume control, and a regulated fail safe power supply. The MS 704 supports up to 55 beltpacks or 10 speaker stations, or 12 headset stations. The MS 704 accepts five separate program audio sources: four line level balances inputs and one assignable line level input. The assignable program input accepts a