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SmartMixer® Eight-channel Automatic 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

    Equipped with optional computer control, the AT-MX381 SmartMixer® is the latest addition to Audio-Technica’s family of automatic mixers. This microprocessor-controlled automatic mixer is designed to provide automatic mixing functions for installed sound, house of worship, broadcast and conference applications. Engineered for intuitive, easy-to-use operation, the new SmartMixer 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)

    • An RS232 data port provides 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
      Control Voltage Out – a voltage appears when the associated input’s gate opens or turns “on”

    • 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)

    • A direct output connection is available for each input

    • Equipped with two audio outputs (one balanced, one unbalanced) to drive amplification systems or other equipment

    • Monitor headphone output with level control

    • Basic functions are configured via front panel; detailed settings through SmartMixer Software

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

    Visit Crestron Website

  • Specifications

    Input Impedance Mic Level: 6600 ohms
    Line Level: 8500 ohms
    Output Impedance Balanced
    Line Level: 300 ohms
    Mic Level: 350 ohms
    Unbalanced: 400 ohms
    Direct Output: 60 ohms
    Maximum Input Level -50 dBu (gain at Max)
    Maximum Output Level 22 dBm (THD+N at 1%)
    Maximum Monitor Output 50mW (@ 1% THD+N) with 16 ohm load
    Maximum Gain 69 dB
    Frequency Response 20 to 20K Hz (±3 dB)
    Equivalent Input Noise -130 dBu*
    Microphone Phantom Power +48V DC
    Control Voltage Out +4V DC
    Power Supply 100/240V AC (auto-select), 50/60 Hz, 20W
    Operating Temperature 32° to 104° F (0° to 40° C)
    Dimensions 16.93” (430 mm) W x
    9.05” (230 mm) D x
    1.75” (44 mm) H
    (not including feet, knobs and connectors)
    Weight 8 lbs. 6 oz (3.8 kg)

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

  • Downloads

    AT-MX381 SmartMixer Manual (pdf 9.88 M)
    AT-MX381 SmartMixer Software Manual (pdf 523.53 KB)
    AT-MX381 Submittal Sheet (pdf 794.60 KB)