Apogee Quartet - Mute Outputs Assignment; Dim Outputs Assignment

Mute outputs
You can assign one of the three Touchpads to mute the Speaker, Headphone or All Outputs.
Dim outputs
The Dim function lowers the output volume by 15 dB. This function is convenient when you want to
briefly lower the playback volume without completely muting the output.
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Operation - Apogee Quartet User’s Guide
Version 1, September 2012 26