About Mp3 Files; About Wma Files; About Aac Files; About Atrac Files - Sony CDX-GT660US Operating Instructions Manual

About MP3 files

• MP3, which stands for MPEG-1 Audio Layer-3, is
a music file compression format standard. It
compresses audio CD data to approximately 1/10
of its original size.
• ID3 tag versions 1.0, 1.1, 2.2, 2.3 and 2.4 apply to
MP3 only. ID3 tag is 15/30 characters (1.0 and
1.1), or 63/126 characters (2.2, 2.3 and 2.4).
• When naming an MP3 file, be sure to add the file
extension ".mp3" to the file name.
• During playback or fast-forward/reverse of a VBR
(variable bit rate) MP3 file, elapsed playing time
may not display accurately.
Note on MP3
If you play a high-bit-rate MP3, such as 320 kbps,
sound may be intermittent.

About WMA files

• WMA, which stands for Windows Media Audio,
is a music file compression format standard. It
compresses audio CD data to approximately 1/22*
of its original size.
• WMA tag is 63 characters.
• When naming a WMA file, be sure to add the file
extension ".wma" to the file name.
• During playback or fast-forward/reverse of a VBR
(variable bit rate) WMA file, elapsed playing time
may not display accurately.
* only for 64 kbps
Note on WMA
Playback of the following WMA files is not supported.
– lossless compression
– copyright-protected

About AAC files

• AAC, which stands for Advanced Audio Coding,
is a music file compression format standard. It
compresses audio CD data to approximately 1/11*
of its original size.
• AAC tag is 126 characters.
• When naming an AAC file, be sure to add the file
extension ".m4a" to the file name.
• During playback or fast-forward/reverse of a VBR
(variable bit rate) AAC file, elapsed playing time
may not display accurately.
* only for 128 kbps
Note on AAC
Playback of a copyright-protected file is not supported.

About ATRAC files

ATRAC3plus format
ATRAC3, which stands for Adaptive Transform
Acoustic Coding3, is audio compression
technology. It compresses audio CD data to
approximately 1/10 of its original size.
ATRAC3plus, which is an extended format of
ATRAC3, compresses the audio CD data to
approximately 1/20 of its original size. The unit
accepts both ATRAC3 and ATRAC3plus format.
• The ATRAC is in the structure of a 2-level
hierarchy; one folder (group), two files (tracks).
– ATRAC CD
The maximum number of folders (groups) is
255, and the maximum number of files (tracks)
is 999.
– ATRAC Audio Device
The maximum number of albums/artists/
playlists is 65535, and the maximum number of
tracks is 65535.
• The characters for a folder/file name and text
information written by SonicStage are displayed.
For details on ATRAC CD and ATRAC Audio
Device, see the SonicStage manual.
Notes
• Be sure to create the ATRAC files using authorized
software, such as SonicStage.
• ATRAC files cannot be played on USB devices other
than ATRAC Audio Device.
If you have any questions or problems concerning
your unit that are not covered in this manual, consult
your nearest Sony dealer.

Maintenance

Replacing the lithium battery of the
card remote commander
Under normal conditions, the battery will last
approximately 1 year. (The service life may be
shorter, depending on the conditions of use.)
When the battery becomes weak, the range of the
card remote commander becomes shorter. Replace
the battery with a new CR2025 lithium battery. Use
of any other battery may present a risk of fire or
explosion.
c
2
1
continue to next page t
+ side up
15