Digital SmartMixer


Gives you the power and flexibility
to mix with more intelligence

  • 6 mic/line inputs and 1 unbalanced stereo input
  • 2 balanced outputs and 1 unbalanced stereo output
  • USB audio input/output (1 stereo input, 1 stereo output)
  • Remote LED control of ES954 hanging microphone arrays using the GPO terminal
  • SmartMixer® with selectable gain sharing or gate mode
  • High-performance echo canceler for each input channel
  • Noise cancellation that can be assigned to any output channel
  • Built-in 4-band EQ and compressor/de-esser for each input channel
  • Eight 8-band feedback suppressors that can be assigned to mic/line inputs and any output channel
  • Built-in 12-band PEQ, compressor, and limiter for each output channel
  • Dedicated Audio-Technica LINK terminals are compatible with a wide variety of Audio-Technica LINK-enabled products
  • Audio input/output settings can be configured from the front panel in applications without a computer
  • Advanced settings can be configured using the web browser or Smart Mixer Manager app GUI in applications with a computer
  • IP Protocol-based external remote control
  • Compatible with Barco ClickShare Conference

    The ATDM-0604a automatic mixer is ideal for meetings, conferences, soft codec applications, courtroom proceedings, radio and TV broadcasts and other applications involving the use of multiple microphones or other media inputs. Audio-Technica's SmartMixer® technology allows channels to be mixed automatically in gate or gain sharing mode, ensuring consistent, high-quality audio output from all inputs in a setup, without the introduction of feedback, excessive ambient noise, or comb filtering.

    Controls and LED indicators on the mixer’s front panel allow users to easily adjust input/output and gain levels, set and recall presets, turn on/off phantom power, low-cut filter, automatic mixing and acoustic echo cancellation (AEC), change IP configuration (Auto or Static), and more. The ATDM-0604a also includes Web Remote functionality, which allows users to handle the aforementioned adjustments from a Windows-based PC, Mac, iOS or Android device, plus make additional changes to the input and output settings, select gate or gain sharing mode when using Smart Mix, and adjust other advanced settings.

    The mixer is equipped with six balanced Mic/Line inputs and one unbalanced stereo input, along with two balanced and one unbalanced stereo outputs. Network (Cat5e or better) and USB ports are also included, as are A/B Audio-Technica Link ports that let users connect eight mixers sharing audio buses and SmartMix controls via Cat5e cable for simultaneous use within an expanded setup.

    The ATDM-0604a is compatible with the Barco ClickShare Conference.

    • audio technica ATDM-0604a
    • audio technica ATDM-0604a
  • ATDM-0604a Audio Specifications

    Maximum Gain

    64 dB

    Frequency Response

    20 ~ 20,000 Hz (MIC -16 dBu) : +1.0/-1.0 dB
    20 ~ 20,000 Hz (MIC -60 dBu) : +1.0/-2.0 dB
    20 ~ 20,000 Hz (LINE 24 dBu) : +1.0/-1.0 dB
    20 ~ 20,000 Hz (LINE -40 dBu) : +1.0/-2.0 dB

    Dynamic Range (Typical)

    110 dB or higher, A-weighted/ST

    Signal-To-Noise Ratio

    90 dB or higher, A-weighted/ST


    20 dB or higher

    Equivalent Input Noise

    -126 dBu or less, Rs = 150 ohm, DIN

    Audio Input

    MIC 1 to 6 max.: 0 dBu
    MIC 1 to 6 unity: -40 dBu
    LINE 1 to 4 max.: +10 dBu
    LINE 1 to 4 unity: -10 dBu
    LINE 5 to 6 max.: +24 dBu
    LINE 5 to 6 unity: +4 dBu/0 dBV/-10 dBV/-20 dBV
    ST max.: +10 dBV
    ST unity: -10 dBV/-20 dBV

    Audio Output

    UNBAL max.: +10 dBV/-13 dBV
    UNBAL unity: -10 dBV/-33 dBV
    BAL 1/L and 2/R max.: +24 dBu/20 dBV/+10 dBV
    BAL 1/L and 2/R unity: +4 dBu/0 dBV/-10 dBV

    Phantom Power

    +48V DC

    Input Attenuation

    -24 dB

    Connecting Terminals

    INPUT ST: Euroblock connectors (3-pin)
    INPUT MIC/LINE 1 to 6: Euroblock connectors (3-pin)
    OUTPUT UNBAL: Euroblock connectors (3-pin)
    OUTPUT BAL 1/L, 2/R: Euroblock connectors (3-pin)
    GPO: Euroblock connectors (3-pin)

    Front Panel LEDs

    SIGNAL/PEAK: 1 point (Red/Yellow/Green)
    Peak indicate (red): -5 to 0 dB
    Peak hold time: 2 sec


    IP protocol: RJ-45 × 1 pc
    IP address: (factory default)
    Communication speed: 100 Mbps

    Link Connector

    Audio-Technica LINK:RJ-45 × 4 pcs
    Communication speed: 100 Mbps

    USB Connect

    Channel: Stereo input x 1 ch, stereo output x 1 ch (24-bit)
    Communication speed: High-speed (480 Mbps)


    Resolution: 24-bit
    Dynamic range: 115 dB

    ATDM-0604a Other Specifications

    Power Supply

    100 ~ 240 V AC (50/60 Hz)

    Rating Capacity

    17 W

    Operating Temperature Range

    0 ~ 40° C


    219.3 mm x 346.3 mm x 44mm (W×D×H)


    1.89 kg

    Accessories Furnished

    Euroblock connector x 11, Rack-mount (large, small), Rack-mount screw x 6, Power cable, Rubber feet x 4


    audio technica support ATDM-0604a_QSG.pdf - ATDM-0604a Quick Start Guide
    audio technica support ATDM-0604a_UM_EN.pdf - ATDM-0604a User Manual
    audio technica support ATDM-0604a_IP_Control_Protocol_Specifications_EN.pdf - ATDM-0604a IP Control Protocol Specifications