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Loudspeakers & Microspeakers

Microphone Measurements

Headphones & Headsets

Audio Electronics Measurements

Any car audio, any measurement


Complete audio test in a single software package

Our Partners

RTW, The Peak of Performance

For 50 years, RTW from Cologne has accompanied the steady
technological progress in the pro-audio industry with innovative
instruments and technologies for visual audio monitoring in broadcast,
production, post-production, and quality control. Whether audio
metering, loudness metering, or signal monitoring, RTW’s
state-of-the-art systems are the result of a future-oriented strategic
approach that focuses on continuous development while putting maximum
attention to reliability and protecting their clients investments.

In 1965, RTW was founded as a specialist service provider for audio
equipment. During the following years, the company became a dedicated
audio-systems developer and a key vendor of professional broadcast and
audio-metering equipment. Andreas Tweitmann took over RTW in 2007 and is
now CEO of the company.

From the RTW Peakmeter featuring the famous gas plasma tube that started
RTW’s overwhelming success in radio and TV studios all over the world
in the 1970ies to the TouchMonitor range incorporating a top-notch
loudness system, RTW has again and again succeeded in setting new
standards in terms of perfection and precision for the entire industry.
Milestone products include the internationally acclaimed Surround Sound
Analyzer providing intuitive surround visualization as well as the SurroundControl 31900/31960
featuring an integrated monitoring controller, a 3G SDI de-embedder,
and a Dolby® decoder for seamless integration into the production
workflows of modern broadcasting and TV studios

The TouchMonitor range truly marks a paradigm shift in visual audio monitoring and loudness metering. The TM7 and TM9
units are the essence of many years of experience. They combine maximum
flexibility and modularity with an intuitive touch-enabled surface and
multichannel signal analysis. The new ergonomic TouchMonitor concept is
touchscreen-based and offers unprecedented freedom in arranging and
scaling user-interface controls. Today, virtually all major
mixing-console vendors implement OEM versions of the TM7 or TM9 on their
products. And the TM3 opens new markets for RTW: This
attractively priced entry-level product featuring a 4.3″ capacitive
touchscreen with pro-grade loudness, true peak, and PPM metering
functions transfers the TouchMonitor concept into a more compact
metering solution for journalist cubicles, edit suits, and small control

Easy-to-Use Solutions with integrated TFT’s for Production and Broadcast – the Audio Monitors

In an ideal world, the human ear would be the best instrument any of us could use for quality control and impartial judgment of your daily work. However, it is just not that simple. The introduction of HD and surround sound, as well as loudness control issues have triggered an increasing demand for quality control and monitoring of audio signals. Fast perception and accurate assessment of audio levels using visual representation methods are indispensable elements of daily work. RTW’s easy-to-use Audio Monitors are the obvious choice

The next generation audio processing in Live- and Postproduction, for TV and Radio

Continuous Loudness Control (CLC) is a Masterclass PlugIn
featuring a unique visualization and patented loudness processing
algorithm developed together with the IRT as a plug-in and
stand-alone software. The amazing look-ahead low latency algorithm used
in the CLC allows dynamic loudness processing of unknown live audio and
audio files to a given loudness value with or without changing the
original Loudness Range and protects to an adjustable True Peak value.
CLC further improves the quality of loudness processing with various
enhancements like batch processing of audio files, extended audio format
support, (e. g. MXF) an expert mode for very special material, Mmax and
Smax limiting, report functions, and optimized presets for e. g.
streaming audio.

For more details please see: https://www.rtw.com

Broadcasters are kept in mind, as they receive many different types of audio files (e. g. MXF) and have to prepare them for transmission. Therefore, CLC‘s batch mode offers automated and unattended loudness analysis and processing of audio files. Incoming audio files from different sources are processed according to predefined settings for e. g. different genres; the output is stored in the target folder together with optional report files. Optimized presets and the Expert mode allow to better match requirements for different types of programs and distribution channel sure, the full-wide image can be pretty big. But sometimes the image is worth it.

bel.co is exclusive representer of “RTW” in the territory of Iran, Afghanistan, Iraq and Turkmenistan 


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Mandozzi Elettronica SA was founded 1965 and became an
incorporated company in the year 1991. Right from the beginning, the
Company was successful as an engineering enterprise designing and
manufacturing special high-tech products in the vast fields of transmitting and processing audio signals as well as data

Today, the most important products are digital audio routers, digital audio mixers and audio over IP codecs. They are well known under the brand names IDEA for the routers, SERIX for the mixers, and UMAC for the IP codecs. These equipment are well accepted by the many Customers for their extremely high reliability, the sophisticated technical and operational features that can be easily managed by the comfortable control surfaces.The outstanding feature of Mandozzi Elettronica is still the willingness of the developing engineers to adapt the proven products to the individual operational and technical requirements of the Customers. This way, they are served with equipment that fulfils their needs in a perfect manner

Download a copy of the Company brochure


ARES is the NEW Mandozzi modular system to create custom control surface, I/O configuration and a DSP power of your digital audio network in broadcast application

To download the preliminary datasheet, click here

The New Mandozzi digital OnAir/Production Audio Mixing Console

  • Ergonomic, easy to learn user interface
  • Completely modular and configurable control surface
  • Immediate system overview and fast parameter access
  •  From 4 to 48 channel P&G motorized faders
  • The heart of the system is the new MANDOZZI Core engine BEA3X
  • Modular DSP structure with 48 full processed I/O signal for every DSP boards
  • Programmable user authorization system
  • Monitoring and talkback system
  • I/O sharing and control sharing with other MANDOZZI Ares System
  •  Intercom Functionality
  • Loudness Meter

  • 19″ 2 RU Engine with control system signal processing and audio interface
  • Integrated Routing System with up to 4096 >< 4096 I/O
  • Modular DSP structure. 48 channel full processing for each DSP boardChangeover functionality
  • Redundant Hot Swap PSU
  • Led Meters, headphone &- monitor out level control, USB port
  • Touch screen for setup &- monitoring functions
  • DANTE integrated AolP board
  • BEALINX integrated board with 512 audio signal bus
  • Software upgrade
  • Modular I/O configuration
  • PSU power factor correction

  • AES/EBU I/O Card: 8 In/ 8 Out
  • AES/EBU Out Card: 16 Out
  • Mic/Line Input Card: 8 In
  • Analog Input Card: 16 Line In
  • Analog Output Card: 16 Line Out
  • Dante AES67 Card: 64 I/O ch >< 2
  • MADI I/O Card: 64 I/O ch >< 4
  • DSP Card: 48 Fully Processed Channels
  • Codec Card: IP Codec Mpeg, AAC, Opus
  • GPIO Card: 12 GPI / 12 GPO
  • GPO Card: 24 GPO

bel.co is exclusive representer of “MANDOZZI” in the territory of Iran


Please be in touch with us