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7. USB Audio
7.1 USB Media and File Compatibility
USB memory sticks must be in Windows/DOS format (FAT/
FAT32) to be used with NAC-N preamplifiers. Apple formats
are not compatible.
NAC-N preamplifiers can play audio files stored on USB
Sticks in the following formats: DSD (NAC-N 272 only), MP3,
M4A, ALAC, AAC, LPCM16/24, FLAC, WMA, WAV, AIFF or
Ogg Vorbis. Files must be free of digital rights management
playback restrictions such as the iTunes FairPlay system.
7.2 Browsing and Playing
USB Files
With a USB memory stick inserted
and the USB input selected, the
display will enter list mode and
show the structure of stored audio files. Use the handset
up (
5
), down (
6
), left (
3
) and ok/list keys to browse and
select items.
Note: The memory stick can be safely connected or
disconnected at any time.
Selecting a folder will display the list of files contained
within and selecting a single file will begin playback.
Playback will continue through any list of files contained
within a folder. The order of play can be shuffled
(randomised) by pressing the handset shuffle (
) key.
In long lists of items the handset numeric
/
text keys can be
used to jump through the list alphabetically.
Once playback is underway the display will exit from
list mode and revert to normal mode where the handset
transport keys (
) can be used to control playback.
To re-enter list mode for further list browsing and selection,
press the handset ok/list key.
During playback, pressing the handset info ( ) key will
alternately display data stream info and track elapsed time.
NAC-N preamplifiers can play audio files stored on USB memory sticks connected to the front panel USB socket. Begin by
inserting a memory stick and selecting USB input.
USB 4/18
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