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Audio-Technica AT-DMM828
8-Channel Automatic Digital Mixer


The AT-DMM828 SmartMixer® latest addition to Audio-Technica’s family of automatic mixers.
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Our Price: $1,799.00
List Price: $2,169.00
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Audio-Technica AT-DMM828
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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.


  • 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


  • 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)

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