NAD T 747 Owner's Manual page 7

10 PHONES: Accepts stereo headphone using a standard 1/4-inch stereo
phone plug (use a suitable adapter for headphones equipped with a
smaller plug). Plugging in headphones automatically mutes output from all
channels. With headphone listening, toggle front panel' s LISTENING MODE
button (or AVR 3' s [SURR] button) to select between "Dolby H/P" (Dolby
Headphone) and "Dolby H/P Off" (Dolby Headphone Off).
DOLBY® HEADPHONE
Dolby Headphone technology, compatible with any pair of
conventional headphones, accurately simulates the experience of
hearing a 5.1-channel speaker system properly set up in a listening
room, minus the annoying "listener fatigue" effect that plagues other
headphone-based virtual surround sound offerings. Dolby Headphone
technology is ideal for private playback of multi-channel entertainment
without disturbing others nearby.
Select Dolby HP Off for normal headphone audio listening.
11 FRONT INPUT PORTS: Use these convenience jacks for occasional
sources such as a camcorder, tape player, video game console, any
analog audio or optical digital audio and composite or S-Video video
sources. If your source only has a single audio out jack or is marked
"Mono output", plug this into the T 747's Front "R (MONO)" input. On
the other hand, if your source has two output jacks indicative of stereo
output, insert both jacks into the T 747's corresponding Front "L" and "R
(MONO)" input to achieve stereo output as well.
12 FRONT MP/MIC INPUT: Connect your MP 3's standard stereo
phone jack to this input. This is also same input where the supplied
microphone is connected for speaker auto calibration. Refer also to the
item about AUTO CALIBRATION under the USING THE T 747 – MAIN
MENU segment of the OPERATION section.
IDENTIFICATION OF CONTROLS
FRONT PANEL
7