The indicator
The indicator on the front tells you the current volume
level. There are 101 levels (0 to 100) and each step is 1 dB.
The selected input is indicated with white blinks:
If Input 4 is set to Unity Gain, it’s indicated in orange:
The -12 dB state is indicated with slow, mostly on, blinks:
The mute state is indicated with a slow on-off blink: