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SmartMixer® Eight-channel Digital Matrix Mixer

U.S. Two-Year Limited End-User Warranty

*Manufacturer's Suggested Retail Price. Actual selling price may vary; please check with an authorized Audio-Technica dealer.

  • Overview
  • Features
  • Specifications
  • Downloads

  • Overview

    The AT-DMM828 SmartMixer® latest addition to Audio-Technica’s family of automatic mixers. This digital automatic 8 channel matrix mixer is designed to provide automatic mixing functions for installed sound, house of worship, broadcast and conference applications. Engineered with intuitive, easy-to-use software GUI, the AT-DMM828 automatically keeps the number of open microphones to a minimum, bringing background noise and feedback under control and providing increased clarity and audio quality.
  • Features

    • Eight balanced inputs allow use with both mic- and line-level signals
      Each input provides:
      -Phantom power (48V), individually selectable
      -Individual gain and volume controls
      -Gate attenuation (adjustable)
      -Low-cut filter (individually selectable via SmartMixer Software)

    • RS232 and USB data ports provide a connection point for a PC with included SmartMixer Software

    • Compatible with Crestron® and AMX® systems

    • External control capability enables the SmartMixer to activate other devices
      Force-On – allows an external contact closure to force its associated input to turn on
      Force-Off – allows an external contact closure to force its associated input to turn off
      VCA Control – Volume up/down

    • Selectable NOMA (Number of Open Mics Attenuated) circuitry helps control feedback

    • Priority pre-select feature allows priority of each microphone to be independently assigned

    • Last Mic On selectable for continuous room ambiance

    • Linking capability for 16 units (up to 128 channels)

    • Equipped with eight balanced audio outputs to drive amplification systems or other equipment

    • Detailed settings controlled through SmartMixer Software

    • Mounts in a single 19" rack space via integral rack mount

  • Specifications

    Input Impedance Mic Level: 6600 ohms
    Line Level: 8500 ohms
    Output Impedance Balanced: 200 ohms
    Maximum Input Level -42 dBu (gain at Max)
    Maximum Output Level 24 dBm (THD+N at 1%)
    Maximum Gain 64 dB
    Frequency Response 20 to 20K Hz (±3 dB)
    Equivalent Input Noise -120 dBu*
    Microphone Phantom Power +48V DC
    Control Voltage Out 3.3V DC
    Power Supply 100/240V AC (auto-select), 50/60 Hz, 20W
    Operating Temperature 32° to 104° F (0° to 40° C)
    Dimensions 18.98" (482 mm) W x
    9.05" (230 mm) D x
    1.75" (44 mm) H
    (not including feet, knobs and connectors)
    Weight 5 lbs. 5 oz (2.4 kg)

    * Input terminated with 150 ohms, A-Weighted using Audio-Precision System Two.

  • Downloads

    AT-DMM828 Manual (pdf 2.63 M)