Audio-Technica AT-MX381


Equipped with optional computer control, the Audio Technica 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 rackmountable 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.

Audio-Technica AT-MX381 SmartMixer Eight-Channel Automatic Mixer Specifications:

  • Input impedance: Mic: 6,600 ohms; Line: 8,500 ohms
  • Output impedance:
  • Balanced: Line: 300 ohms; Mic: 350 ohms
  • Unbalanced: 400 ohms
  • Direct Out: 60 ohms
  • Maximum input level: -50 dBV (gain at max.)
  • Maximum output level: +22 dBm (THD+N at 1%)
  • Maximum monitor output: 50 mW (@ 1% THD+N) with 16 ohm load
  • Maximum gain: 69 dB
  • Frequency response: 20 Hz to 20 kHz
  • Equivalent input noise: -130 dBV
  • Microphone phantom power: +48V DC
  • Control voltage out: +4V DC
  • Power supply: 100V/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 (including feet, knobs and connectors)
  • Weight: 8 lbs. 6 oz (3.8 kg)

    Audio-Technica AT-MX381 SmartMixer Eight-Channel Automatic Mixer Features:

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

  • Add to Cart:

    • Model: AT-MX381
    • Manufactured by: Audio Technica

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    Most users do not need a license to operate a wireless microphone system. Nevertheless, operating a microphone system without a license is subject to certain restrictions: the system may not cause harmful interference; it must operate at a low power level (not in excess of 50 milliwatts); and it has no protection from interference received from any other device. Purchasers should also be aware that the FCC is currently evaluating use of wireless microphone systems, and these rules are subject to change. For more information, call the FCC at 1-888- CALL-FCC (TTY: 1-888-TELL-FCC) or visit the FCCs wireless microphone website at