MS-400A

The MS-400A is designed for applications in which a person needs to communicate with up to four other people or groups of people, either individually or simultaneously, while still maintaining isolation between each of the four channels.

The MS-400A is self-powered, and can also power up to 20 speaker stations or 100 headset stations. It is normally used as a main station (which provides system termination at a central location), but may be used also as a remote station that provides extra power capacity.