The MAS 133 is a versatile XLR inline switch box for integrated microphone solutions. Attached between the mic and mixing console, it powers the MAS 1 microphone button. It is able to control any XLR-attached microphone using switchable microphone activation modes (PTT, PTM, toggle ON/off, permanent on). The MAS 133 features a TTL logic, enabling the user to trigger e.g. camera or media control systems for various purposes.