Hey everyone,

I'm having a strange issue with my Soundcraft Signature 22 MTK on macOS (M1 chip) that appeared suddenly.

I was using the mixer/interface in Ableton Live 11, when macOS unexpectedly activated "Voice Isolation" / Mic Mode — and since then, the interface is no longer working properly.

Here’s what’s happening:

- macOS doesn’t recognize the mixer properly anymore (not listed in Audio MIDI Setup or Ableton).

- Internal FX are disabled.

- Master vu-meters show constant signal on FX channels, even with nothing plugged in.

- When I unplug the USB cable, the mixer works normally again.

I suspect the console has been forced into some sort of "USB Mic Mode" / basic class-compliant mode, and it's no longer functioning as a multichannel interface.

What I’ve tried:
- Booted the Mac in Safe Mode

- Disabled all microphone permissions + Voice Isolation in system settings

- Cleaned CoreAudio via Terminal

- Tried multiple cables and ports (including powered USB hub)

- Fully powered down the mixer and waited before restart

- Uninstalled TR-8S drivers (that caused a similar issue earlier)

Log shows:

AppleUSBIORequest::complete: device 7 (Soundcraft Signature 22 MTK@00142000) endpoint 0x00: status 0xe00002ed (transaction error): 0 bytes transferred.

I'm trying to find out if there's:

- A way to force the mixer back into its proper USB multitrack mode

- A factory reset or firmware flash option

Any known macOS workaround to avoid this “USB mic hijack” behavior?

I’ve also contacted Soundcraft/Harman and Apple Support, but I’d love to hear from anyone here who's experienced something similar — or has a fix.

Thanks in advance!