The SB-704 is a 2RU four-channel switchboard main station with programmable front
panel buttons, individual channel short-circuit protection, individual channel volume control, a switchboard matrix, and a regulated fail-safe power supply. The SB-704 supports up to 55 beltpacks or 10 speaker stations, or 12 headset stations. The 10 x 4 assignment switching
matrix allows up to 10 different groups of stations to be assigned to any one of the four channels.
![Clearcom SB-704 4ch 10 Station Switchboard Main Station rack mount Clearcom SB-704 4ch 10 Station Switchboard Main Station rack mount](https://sonalyst.co.uk/wp-content/uploads/2016/04/Clearcom-SB-704-4ch-10-Station-Switchboard-Main-Station-rack-mount-scaled.jpeg)