Device Detection Problems

Quick Fixes

Restart Sounn: Quit completely (Cmd+Q) and reopen
Reconnect device: Unplug and replug the USB/Thunderbolt connection
Check System Preferences: Verify device appears in System Settings > Sound

Detailed Troubleshooting

Check macOS Recognition

Open System Settings > Sound
Look for your device under Input (microphones) or Output (speakers/interfaces)
If it appears there but not in Sounn, restart Sounn
If it doesn't appear in macOS, continue troubleshooting below

USB Connection Issues

Try a different USB port (directly on Mac, not through a hub)
Try a different USB cable if possible
For USB-C Macs, try a different adapter or hub
Some devices require USB 2.0 ports—try a USB-A port if available

Driver Requirements

Most audio devices on macOS are class-compliant and don't need drivers. However, some professional interfaces require manufacturer drivers:

Check the manufacturer's website for macOS drivers
Verify driver compatibility with your macOS version
After installing drivers, restart your Mac

Resetting Audio System

If devices still aren't detected, try resetting macOS audio:

Reset Core Audio

Open Terminal
Run: sudo killall coreaudiod
Enter your password when prompted
Audio will briefly stop, then restart
Re-open Sounn and check device list

NVRAM Reset (Last Resort)

Some audio problems are resolved by resetting NVRAM. This resets system settings including default audio device:

Shut down your Mac
Turn on and immediately hold Option+Command+P+R
Hold for about 20 seconds
Release and let Mac boot normally

Intel vs Apple Silicon

NVRAM reset works differently on Apple Silicon Macs. The procedure above is for Intel Macs. For Apple Silicon, shut down, wait 30 seconds, then restart.