Trace AES42-4

  • 4 XLR Inputs via breakout cable
  • BNC Wordclock / Superclock Input
  • TDM-SyncBus
Technical Data
  • PCI 2.3 card, 32 Bit, 3.3V/5V
  • Audio Inputs:
  • 4x XLR for AES42 compliant digital microphones and standard AES/EBU sources
  • usable with cable lengths of several hundred meters
  • Phantom Power:
    - up to 0.35 A per channel
    - continuous load monitoring
    - disengageable for standard AES/EBU sources
  • Voltage:
    from 0,2 Vss
  • Sample Frequency:
    30 ... 200 kHz
  • Sample Formats:
    8, 16, 20, 24, 32 Bit Mono/Stereo
  • Activatable Samplerate Converters:
    - Ratio: 1:16, 16:1
    - Dynamics: 140 dB
    - THD+N: -140 dB
  • Wordclock-
    Superclock Input:
  • BNC Connector
  • Impedance:
    10 kOhm
  • Software Controlled Termination to 75 Ohm
  • Input Response:
    1 Vss - 5,6 Vss
  • DC-Offset free
  • Schmitt Trigger
  • Synchronization Sources:
  • Wordclock/Superclock
  • AES Input
  • Internal
  • TDM-SyncBus
  • Master / Slave Mode (AES42 Mode 1+2)
Driver Suite
  • Windows™ 2000/XP/2003 Server/Vista/2008 Server, Windows™ 7
    as 32-bit version each
    WDM Audio, DirectSound, GSIF2, MME, ASIO 2.1, MXAPI, Advanced Multi-Client Support


The TRACE AES42-4 is a PCI audio system of the latest generation designed for highest demands. It provides 4 digital microphone inputs in AES42 format with 24 bit and up to 192 kHz.

Sophisticated and easy-to-use functionality allows stress-free operation of the system − for beginners as well as for professionals. Features and reliability have been prepared especially for discerning applications in the music studio, for broadcasting, television and theatres as well as stage and PA.

The main feature of the TRACE AES42-4 is the complete support of the AES42 standard. This way, for the first time it is possible to control digital microphones remotely over distances of several hundred meters while simultaneously recording the signals with absolutely no lack of quality. The phantom power may also be deactivated individually. Thus, you can use also standard AES/EBU devices, if the are decoupled electrically by transformers. To avoid shorts and overloads, the phantom power of every channel is monitored separately by a special circuit. Furthermore the TRACE AES42-4 incorporates the reliable and high speed hardware architecture of the TRACE series, enabling data transfers with lowest latencies practically without CPU load. Besides the DSP Mixer which is completely integrated in the hardware of the card, it features the very handy card-spanning TDM-SyncBus. Apart from synchronously coupling several TRACE-systems, free routings of audio channels within the card union can be realized comfortably.

Like every member of the TRACE series the TRACE AES42-4 marks up due to it's easy installation and steadily controlled highest manufacturing quality. MARIAN grants a 5 year warranty.

Uncompromised audio quality

The hardware design was set especially for the robust and distraction-free transmission of the AES42 format. The digital XLR inputs have a minimum of 140 dB dynamic range. The numerous and detailed possibilities for controlling exceed even the highest expectations of broadcasts stations.

Powerful DSP Mixing

The digital mixer which is completely integrated in the hardware uses quick and flexible DSP functions and allows latency-free mixing of all signals to several stereo sums, as well as latency-free monitoring and routing of all inputs to all outputs (TDM Bus). This way, perfect monitor mixers can be set up quickly and played back on the TDM Bus outputs. The mixer can be configured in many ways − all channel groups but also single mixer sections may be shown or hidden. Audio- and layout settings may be saved and loaded from snapshots and session files. (total recall)

All in all, the mixer offers 24 channels (4 microphone inputs (mono or stereo), 8 playback signals of one/several software applications and the 8 TDM channels), which, depending on the sample rate, can be mixed to up to 4 individual stereo sums.

All channels and the mixer sums can be played out via the TDM outputs, assigned in a separate window called "output control". With an additional TRACE system of your choice you can thereby realize flexible signal converters and play out systems. Of course multiple assignments are possible.

Advanced multi client capabilities

The mixer offers 8 channels (4 stereo) which are available to any audio application. In the output control you have additional 4 stereo channels for parallel multi client operation. This way the TRACE AES42-4 appears as 16 channel audio device to any audio software. By distributing these channels to different audio applications, two or more software sequencers, -samplers, -synthesizers or media player can run on one system without receiving any device conflicts.

Handy TDM SyncBus

Up to four TRACE- and Marc- audio systems can be connected to a synchronous system using the hardware TDM SyncBus. Now not only the same reference clock will run, but also the sample exact start/stop synchronization of all connected in- and outputs is ensured. Thus, up to four TRACE AES42-4 could be combined to a system for controlling 16 digital microphones (32 channels). All you need is a TDM SyncBus Cable.

The card-spanning TDM SyncBus also allows free routing of up to eight audio channels for all installed TRACE Systems. This is how single channels of complete sub mixes can be distributed to any other TRACE system. A TRACE compound with inputs and outputs of any type − analog or digital − can thus be used as router, patch-bay, converter or splitter, allowing for e.g. external effect units to be integrated zero-latency stile and available to all other cards. All in all this is a full size modular audio system combining various connection types.

HD Sample rate conversion

The TRACE AES42-4 is equipped with a high quality sample rate converter on every digital input, ensuring excellent adjustment to the reference clock on demand. Digital microphones may thus be operated in "Mode 1" (the mic is clock master) or "mode 2" (the mic is clock slave). Using the best components available guarantees outstanding technical parameters (THD: - 140dB).

High speed driver suite (with Advanced Multiclient)

The TRACE Aes42 provides a complete driver suite for Microsoft Windows. The continuosly improved, multi client enabled drivers for ASIO 2.0, GSIF 2, MME, WDM (Kernel-Streaming and non-emulated DirectSound) guarantee ultra low latencies for all software enviroments. The clear and handy driver dialogues ensure the display of all inputs and outputs as well as the adjustment of many parameters (e.g. exact levelling and flexible monitoring). A special status display allows the visual control of the current clock adjustments.

Marian Technologies
  • MARIAN TRACE Highspeed Hardware Architecture
  • Ultra Low Latency Design (CPU Transfer Relief)
  • HighSpeed Driver/MultiClient
  • MARIAN TDM SyncBus (Modular MultiCard Design)
  • Integrated Hardware DSP Mixer with Total Recall
  • Start/Stop Synchronization of all channels
  • Zero Latency Monitoring
  • Realtime Hardware Level Meters
  • MARIAN Digital Status Display
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