I’m currently using the Focusrite Saffire Pro 24 on an OSX machine. I’ve had a minor issue where occasionally you could not get an output signal from the headphone out. This issue occurs when you cut power to the interface through the switch at the back panel without turning the computer off.
I had to resort to rebooting the computer each time this issue occurred. Luckily, I came across a simple solution on the Ableton forum. You open up the Saffire mix control software and change the sync source to anything other than internal. Then you switch it back to internal and output is restored. Remember to also select the Saffire as your default sound unit in the system preferences. And that’s it!
Here’s how you can get signal back to your headphone out,
- Launch the Saffire Mix Control Software
- Select Sync Source
- Change sync source from internal to SPDIF or ADAT (either will do)
- Change sync source back to internal.
- Audio should be restored to headphone out.