How does the volume control work on the AudioExpress?
The volume knob on the front of the AudioExpress can control the Main out, Headphone out or both simultaneously.
Those can be toggled by pressing the Phones level knob repeatedly.
If the +Main LED is off, the knob only controls the headphone output.
If the +Mains LED is on, the knob controls the main outs AND the headphone outputs.
If the +Mains LED is flashing, the knob controls only the main output level.
When changing Phones or Main volumes the LED’s in the Mic/Line 1 column represent Phones level and the LED’s in the Mic/Line 2 column represent Main level.
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