Sennheiser MAS 133 Inline Switch Box

Sennheiser MAS 133 — Inline XLR Switch Box

MAS 133 Overview

The Sennheiser MAS 133 is an XLR inline switch box engineered for meeting and conference system installations where direct microphone control and visual status indication are required without reliance on an external DSP system. Its inline XLR form factor integrates cleanly into existing cable runs, minimizing infrastructure complexity. The MAS 133 is well suited for system integrators, AV installers, and facilities managers deploying conferencing solutions in boardrooms, council chambers, and multi-use meeting spaces.

By providing local microphone switching and status display at the source, the MAS 133 simplifies operator workflow and reduces the need for additional control hardware in smaller or standalone conferencing setups.

Key Features

• Inline XLR Form Factor — Integrates directly into standard XLR microphone cable runs for a clean, low-profile installation
• Microphone Control — Provides easy on/off switching at the microphone position without requiring a separate control surface
• Status Display — Built-in visual indicator communicates microphone active/mute status to the user at the mic position
• DSP-Independent Operation — Functions without a DSP system, making it viable for standalone or simplified conferencing deployments
• Meeting & Conference System Integration — Designed as part of Sennheiser’s MAS conferencing ecosystem for scalable, professional installations

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