Loudness Simplified:


Professional Loudness, True Peak and PPM metering at an affordable price with easy and flexible preset control.


Compact metering device for all creative fields of the music industry

RTW‘s TM3-Primus series units are a highly compact and innovative, easy-to-use products, giving music, voice, and multimedia producers in professional as well as non-commercial environments everything they need. Therefore, the loudness and audio metering devices include frequently used standard instruments and parameters in supreme quality to meet the demands of a wide variety of applications.

  • Horizontal or vertical use, as desktop or panel-mount unit
  • Analog or digital Stereo signals, digital Stereo and 5.1 signals via USB
  • USB hybrid function for direct access of audio signals from a DAW

    The TM3 Primus can measure stereo or 5.1 signals from a computer via its USB connection, provided it has been defined as a USB audio device for sound output (Mac® OS X) or as a default playback device with the Primus USB audio driver installed (Windows®) on the corresponding computers. Alternatively, you can install the USB Connect software.

    Beside the use as a standalone desktop or 2U panel-mount unit including analog and digital audio interfaces, as well as USB audio, the TM3-Primus series units with firmware version 1-02 or higher also provides the innovative USB hybrid function for direct access of audio signals from a DAW. Metering will then be performed right from the DAW via RTW USB Connect software, and the TM3-Primus devices will process and visualize the information without the need for additional wiring or extensive signal routing, and without dropping the standard audio interface.