If you are experiencing that no USB audio will pass on your ATDM-0604, you should be able to resolve this by following the steps below. This test applies even if INPUT ST is not being used as USB in your setup. You should only need to perform these steps once. This solution is primarily aimed at FW versions up to 1.0.2.

On these FW versions, the USB preamp receives a very strong signal from the PC. Often, the USB preamp receives this signal and immediately shuts off the USB function (in & out) on the mixer to protect itself. The preamp will then not open until it receives audio of a lower volume, confirming that it is safe to pass audio again - it will then open both inbound and outbound audio signals. The below instructions help you get audio passing again in this way.

For a general guide on using USB with the ATDM-0604, please view the user manual here: https://eu.audio-technica.com/resources/ATDM-0604_UM_222304240_V2_EN_web_180501.pdf

Setting the ATDM-0604

  • Pause any audio playback on the PC/Mac
  • Restart the ATDM-0604
  • Once fully booted up, log on to the unit via the Web Remote Manager or your web browser. If you have set your ATDM to a static IP, it will default to
  • On the input page, set IN ST source to USB, and turn the IN ST gain down to -20dB (minimum setting, as per picture below)

  • Turn up the fader on IN ST to ensure level will show on the metering, and make sure to select the output channel that you need to send the audio to (if required, as below)

  • Make sure to save the gain change to your presets, to ensure that this issue does not persist

Settings for PC

  • Right-click the speaker icon on the Start bar, click Playback Devices
  • You should see the ATDM-0604 listed as ATDM-0604, Echo-Cancelling Speakerphone or similar on the new window. Click the ATDM-0604 and then click Set Default to ensure any playback audio is sent to the unit by default
  • Now, click the Recording tab on the same window. Again, click the ATDM-0604 and then click Set Default
  • Whilst still on the Recording tab, right-click the ATDM and select Properties
  • On the new window, please select Levels. Ensure that the level showing is at full volume (100), and press OK to confirm

  • To ensure the audio playback starts to work, we also need to reduce the volume of the audio going to the mixer from the PC
  • Right-click the speaker icon again and select Open Volume Mixer
  • Make sure the device on the left of the window is the ATDM. Once selected, reduce the volume to around 20-25 (1/4 volume)

  • Now attempt playback of audio from the PC
  • On the mixer input page, Audio should now be showing on metering, IN ST channel
  • You can then test audio from microphones being sent to the PC, this should also be working now

Settings for Mac

  • Press the Command & Space keys together to open up Spotlight Search
  • Type in Audio, you should see Audio MIDI Setup appear as an option - click or select this
  • The Audio Devices window should appear automatically
    • If it does not, check that Audio MIDI Setup is showing on the bar at the top. If yes, select Window and then Show Audio Devices
  • The mixer will be listed as DIGITAL SMARTMIXER Audio Interface. Right-click (or two fingers on a trackpad) the ATDM and select Use this device for sound input
  • Press again in the same way, and this time select Use this device for sound output
  • To ensure the audio playback starts to work, reduce the volume on the Mac to about 20-30% (5 bars on the volume indicator should be fine)
  • Finally, start test audio and check metering on the mixer input page for the ATDM-0604. The IN ST channel should now show level
  • You can then test audio from microphones being sent to the Mac, this should also be working now

Should you still experience difficulties after using this guide, please email the AT Support Team at the following addresses:

UK customer:      supportuk@audio-technica.eu

Europe & Africa: support@audio-technica.eu

Middle East:        supportme@audio-technica.eu

Future firmware releases will aim to rectify this issue.