Hi, it looks like the same issue that's occurring on Weiweiweiwear's Mac. A plausible explanation is that it's related to the feedback the Teensy sends to the USB host:
This would explain why the problem doesn't occur on all Macs—it depends on...
Hey @alex6679,
Yes, I did test it on my Mac.
Even with just Stereo playback with Audacity on Mac.
The channels go Mute after about 5s of playback.Same for more than 8 channel play back as well.
On Windows it works perfectly.
@alfa66 I've experimented with one of those boards from ali express, they work fine with Teensy.
I captured a few details of the connections on my board - it look exactly the same as your board.
I have it running with the 6 ins and 8 out with...