Description
The MS-4002 is a four-channel balanced audio master station that integrates a 4.0 amp system power supply in a single 1U rack-mount chassis. It provides operator audio control for intercom networks and supports both speaker-station and headset-station operation. The unit is designed for professional AV and broadcast environments that require a compact, rackable master intercom solution.
Key features include an auto-sensing headset connector that detects dynamic or electret microphones and selectable station modes for speaker or headset use. The unit offers voice-activated microphone (VOX) capability, program inputs for each channel, and a public address (PA) output with a dedicated PA key for external announcements. Controls include back-lit keys and incoming call indications for clear operator feedback.
On the technical side, the MS-4002 accepts 100 to 240 VAC mains input and supplies 4.0 amps for the system power bus. It supports balanced audio operation and can run in unbalanced mode for compatibility with legacy equipment. The front panel features advanced programming controls eliminating the need for internal DIP switches and includes an instantaneous auto-reset function.
Connectivity options include headset and microphone connections on the front panel and intercom station connections on the rear panel. The PA output can drive external amplifiers or powered speakers, and the unit can be configured to listen through external powered speakers. Clear-Com compatibility is built in to ease integration with common wired intercom infrastructures.
Typical use cases include broadcast production control rooms, live event communications, and fixed-install AV control where multiple user channels and centralized power distribution are required. The MS-4002 is expandable to support larger intercom systems and offers operator-centric controls for call handling and mic management. Its compact 1U footprint fits standard 19 inch equipment racks for space-efficient installation.
Installation is straightforward: mount the unit in a standard 19 inch rack, connect AC mains between 100 and 240 VAC, attach headsets or microphones, and connect intercom stations to the rear connectors. The front-panel programming and auto-sensing headset detection simplify setup and reduce configuration time. The MS-4002 is built for reliable daily operation in professional AV environments.
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