Listening Mode Preset; Analog/Pcm; Mono/Multiplex; 2 Ch Source - Onkyo TX-NR545 Manual

Advanced Settings (Setup Menu)
5. Listening Mode Preset
You can preset your favorite listening mode to each input. (For example, you
can always apply straight decode to the Dolby TrueHD source of Blu­ray
Disc to play it in unchanged sound field.)
When the list of input sources is displayed, set the signal type and listening
mode.
Although it is possible to select the listening mode during playback, the
selected mode will be reset when the unit enters standby mode.

Analog/PCM

Default Value: Last Valid
Set the listening mode for playing PCM signals of CD and analog
signals of record and cassette tape.

Mono/Multiplex

Default Value: Last Valid
Set the listening mode for playing Dolby Digital and other digital signals
recorded in monaural or multiplex audio.
2 ch Source
Default Value: Last Valid
Set the listening mode for playing Dolby Digital and other digital signals
recorded in 2 channels.
Dolby D/Dolby D+/TrueHD
Default Value: Last Valid
Set the listening mode for playing Dolby Digital, Dolby Digital Plus and
Dolby TrueHD signals.
DTS/DTS­ES/
DTS­HD
Default Value: Last Valid