4-Channel Switchboard Main Station - 5-channel X 10 station assignment matrix no speaker - with built-in 2-amp power supply rack mount (2RU)

SB-704 includes all of the features of the MS-704 with a 4 x10 assignment matrix in place of the internal speaker (external speaker required for station monitoring). The station features a ten-position slide switch matrix that allows assignment of any of the ten intercom lines to any of the four intercom channels to an isolated separate party-line or to an off position.

SB-704

Technical Specifications

Panel Microphone Input
Input Type: Electret
Input Impedance: >=2K
Mic Limiter Threshold: 0dBu