I was just looking at the manual for my NAD T758 receiver and it seems a REALLY convoluted process to get the direct mode output. Here's what it says:
The analog or digital sources are automatically played in their native formats. All the source’s audio channels are reproduced directly. This mode recreates the original sound most faithfully thereby producing outstandingly high quality audio. Note that the source must be at playback mode for “Direct” to become available as a listening mode option. In order to automatically playback your source in their native format, implement the following settings.
1 Go to “Listening Mode Setup” under “Setup Menu”. At the “Listening Modes” menu, set all Dolby, DTS, PCM and Analog settings to “None”. With this setup, your source will be played back directly at its native format.
2 Next, go to “A/V Presets” under “Setup Menu”. At “A/V Presets” menu, set “Listening Mode” item to “Yes” and then save this setting among other options, say to “Preset 1”, by selecting “Save Current Setup to Preset”.
3 Now, you can associate “Preset 1” to any of the “Source” settings. For example, at Source 1 setting under “Source Setup (Normal View)”, scroll down to “A/V Preset” item and set it to “Preset 1”. Thus whenever Source 1 is selected, the associated source will always be directly played back at its native audio format.
I don't know if it's worth the trouble because it's not clear to me if I go back to "Stereo" or other modes if I have re-engaged any Dolby, DTS, PCM or other coding. Does anyone know how to decipher that mess?
It also say the following about "Stereo" mode, and that's what I use most times while listening to digital files fed from my Bluesound Vault, CD player or turntable.
STEREO
Output is directed to the front left/right channels. Low frequencies are directed to the subwoofer if one is present in the Speaker settings. Select “Stereo” when you wish to listen to a stereo (or monaural) production, such as music CD or FM broadcast, without surround enhancement. Stereo recordings whether in PCM/digital or analog form and whether surround-encoded or not encoded, are reproduced as recorded. Multi-channel digital recordings (Dolby Digital and DTS) are reproduced in “Stereo Downmix” mode via the front left/right channels only as Lt/Rt (left/right-total) signals.
I think I should just keep using this. Sometimes I toggle to "Bypass Analog" mode and that disables output to the sub and seems to put more bass though the speakers so I'm thinking this is effectively giving me a sort of direct mode. Thoughts?