I plugged this tascam usb interface us 4x4 into my windows 10 machine and only the first 2 channels are playing audio. I have tried on a Windows and Mac machine and the same thing happens. What's unusual though is that when I shut down my computer and leave the USB cable plugged in I can hear audio from all 4 mics into my headphones.


  • This is not a question, it's an observation. If you have a question, please feel free to ask it, but it sounds like you need to review the operating instructions for your interface first.
    – Mark
    Nov 3, 2019 at 0:51


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