External Device Controls
Drive S: The CDX-GT81UW features the Drive S chassis platform. Drive S includes the CD
mechanism, audio stages, 12 volt power supply, and tuner section. The CD mechanism
includes a suspension to resist shocks, a motor that draws less power, and a
fast low-current pickup that improves durability and CD playback accuracy. The
52W Peak x 4-channel S-MOSFET Power IC produces clearer, more accurate sound, less
distortion, and a higher signal-to-noise ratio than previous designs.
Motorized Detachable Face: The CDX-GT81UW
features a motorized detachable face for theft prevention. The front panel can
be set to 3 angled positions or flat. If you turn off the ignition without
removing the face (and you're using the built-in amplifier), a caution alarm
will beep for a few seconds.
3D Fluorescent Display: The
receiver has a 3-dimensional fluorescent motion display with selectable images.
Choose between 3 motion displays, 5 spectrum analyzer
patterns, or 3 wallpaper backgrounds. The display will also rotate among all the
patterns in any of those three categories automatically, or rotate among the
patterns in all categories. You can also turn the background display off, so
just the numbers and text are displayed.
Compressed Audio File Capability:
In addition to audio CDs, CD-Rs and CD-RWs, the
receiver will play MP3, WMA, AAC, and ATRAC (ATRAC3 and ATRAC3plus) compressed
audio files stored on a CD-R or CD-RW. Below are the requirements and
features for compressed audio file playback:
compatible with the ISO 9660 level 1 / level 2 format, Joliet/Romeo in the
expansion format, and Multi Session
- The Maximum number of:
- folders or albums is 150
including root and empty folders
- files or tracks and
folders contained in a disc: 300 (or less if a folder/file names contain many
- displayable characters for a
folder/file name is 32 (Joliet) or 64 (Romeo)
- Playback Functions:
- Track Skip
- Folder Skip
- Track Repeat
- Album/Folder Repeat
- Album/Folder Shuffle
- Disc Shuffle
Compressed Audio Display Information:
The CD receiver's display can display the following information: Track
number/Elapsed playing time, Disc/Artist Name, Album/Group Number, Album/Group
Name, Track Name, Text Information and Clock.
Radio Tuning: The CDX-GT81UW
allows you to manual tune or seek tune AM/FM stations. In the Local Seek Mode,
the unit will only tune in stations with very strong signals during Seek tuning.
The Mono Mode allows
you improve poor FM reception by selecting a monaural signal instead of a stereo
signal. The radio features 5 memory bands to store and receive AM/FM stations. You can store up to 6
presets each in FM1, FM2, FM3, AM1 and AM2. Other tuner
- Best Tuning Memory (BTM): This feature selects stations with the best signals within the selected
band and stores them in order of their frequency. You can select from FM1, FM2,
FM3, AM1, and AM2.
- Manual Tuning: You can
manually tune and find your favorite radio stations one by one for FM1, FM2,
FM3, AM1, and AM2.
- Auto Tuning: You can use
the seek button to help you search quickly through the available stations
and then choose your own presets from these available stations.
- IF (Intermediate Frequency):
You can choose "Auto" to narrow automatically the reception frequency to
eliminate noise, or "Wide" to always hear FM stereo broadcasts in stereo and
with full frequency signal reception.
EQ3 Parametric: EQ3 Parametric offers
7 EQ presets, each of which has a preset value for 3 bands: Low, Middle, and High.
You can choose from two center frequencies for each band: Low (60Hz or 100Hz),
Mid (500Hz or 1kHz), and High (10kHz or 12.5kHz). The EQ presets and the band values are as follows:
- Xplod: Low: +10, Middle:
+4, High: +4
- Vocal: Low: +4, Middle:
+8, High: +2
- Edge: Low: +6, Middle: -2, High: +7
- Cruise: Low: +3, Middle: +4, High: +2
- Space: Low: +4, Middle: +5, High: +8
- Gravity: Low: +8, Middle: 0, High: +2
Adjustable -10dB to +10dB for each band
Dynamic Soundstage Organizer
(DSO): Sony's Dynamic Soundstage
Organizer uses proprietary circuitry to induce subtle phase shifts, simulating a
sound source that is placed higher than the actual speakers in the vehicle. For
example, when the DSO function is used in a vehicle equipped with speakers
mounted low in the front doors, it creates virtual speakers in the dash to raise
the soundstage. This unit offers three levels of DSO, each with a larger and
higher soundstage. You can store the DSO setting for each source.
BBE MP: The BBE MP process
improves digitally compressed sound, such as MP3, by restoring and enhancing the
harmonics lost through compression. BBE MP works by re-generating harmonics from
the source material, effectively recovering warmth, details, and nuance.
Amplifier Section: The head unit's
amplifier is CEA-2006 compliant and rated at 17 watts RMS x 4 channels at 4
Ohms and 1% THD. The unit is also rated at 23.2 watts per channel minimum
continuous average power into 4 ohms, 4 channels driven from 20 Hz to 20 kHz
with no more than 5% THD. Peak power is rated at 52 watts per channel.
Preamp Outputs: The CDX-GT81UW
has three pair of RCA preamp outputs for the front, rear, and
subwoofer channels. The subwoofer output is non-fading
and has a low pass filter with a selectable cut-off frequency of 125Hz,
78Hz, or Off (full range). The subwoofer volume is adjustable from -10 to +10
(relative to the main volume).
Front Panel Auxiliary Input: A
front panel stereo 3.5mm mini-jack is provided to allow the connection of a portable
audio source. Just connect your portable cassette, MD or MP3 player to this
unit, and you can listen to the audio from the portable player through the
speakers in your mobile audio system. The level for the auxiliary
source can be set in the menu to more closely match the head unit's other
sources. The level is adjustable from -8dB to 0dB to +18dB.
USB Input: The receiver is
equipped with a Type A USB input for plugging in USB devices such as flash
drives or Sony Walkman portable MP3 players. The head unit can play music files
stored on the USB device in MP3, WMA, AAC, or ATRAC formats. When playing a USB
device, the display can indicate track/album/group number,
disc/artist/album/group/track name, elapsed playing time, text information, or
clock. A USB cap is supplied to place in the USB input when it is not in use.
Note: Compatible USB
devices include Sony Flash Memory and Hard Drive Walkman MP3 players,
and select flash drives from Dikom, Hama, Memorex, Integral, Philips,
PNY Electronics, and SanDisk.
For flexibility of installation, this unit can be mounted between 0 (horizontal)
and 45 degrees.
Illumination/Clock Display: Pressing the Off button once will turn off audio output, but the clock display
and face/button illumination remain on. This makes the clock display and
face/button illumination "Keyed" instead of "Unit On" only. To turn the unit off
completely, you must press the Off button for two seconds.
Auto Off: When installing in a vehicle without an accessory power wire at the
radio location, you can set the unit to turn off all lighting a
set amount of time after you turn the power off. The Auto Off feature can be set to 30 seconds, 30 minutes,
60 minutes, or No.
Illumination Mode: The CDX-GT81UW features an
automatic illumination mode to dim the brightness of the display. You can choose between
"Auto" (display dims automatically when vehicle lights are turned on), "On"
(display dimmed) or "Off" (display at full brightness).
Note: In order for the "Auto" dimmer to work, the orange/white wire in
the head unit's wiring harness must be connected to the vehicle light circuit.
Auto Scroll: This feature
allows long names to scroll automatically across the display when the
track is changed on a disc.
Eject: The CD disc can be
ejected with the power off. The CD player will automatically reinsert the
disc if it's ejected but not removed for
15 seconds or more.
Remote Control: This unit comes
with a card-style remote commander, RM-X152. In addition to common commands, the
remote also allows you to mute the audio, and select and store radio presets.
The unit also has a 3.5mm minijack input for the optional RM-X4S wired rotary
commander. In addition, the PAC SWI-PS steering wheel remote interface is
compatible with this head unit.
External Device Controls
iPod Ready: You can connect an
iPod to this unit and control it via the front panel controls and remote. The
optional XA-110IP iPod Control Interface (item number 158XA110IP) is required.
Satellite Radio Ready: There
are several options for connecting an optional XM or SIRIUS Satellite Radio
receiver to this receiver:
HD Radio Ready: The CDX-GT81UW
is compatible with Sony's optional XT-100HD add-on HD Tuner (sold separately)
through its UniLink Bus connection. HD Radio
technology, where available, offers higher quality sound than conventional
analog broadcasts and receives text data. HD Radio provides FM broadcasts that
are equal to CD sound quality and AM broadcasts that are as good as analog FM
stereo broadcasts. HD Radio also provides a variety of data, including station
name, song title, artist name, album name, etc. Once connected, all AM and FM
broadcasts are received by the XT-100HD. HD appears as an additional source,
with five preset banks; HD1 (FM1), HD2 (FM2), HD3 (FM3), HD4 (AM1), and HD5
(AM2). In addition to conventional broadcasts, with HD Radio broadcasting it is
possible to choose from up to 8 multicast programs (HD1 to HD8 and analog).
There are also data programs for each program.
This unit is compatible with Sony UniLink CD/MP3 and MD changers.
Multiple Changer Control: A maximum of 5 CD changers, 5 CD/MP3
changers, or 5 MD changers may be connected to this receiver. When connecting
CD, CD/MP3 and MD changers, you may connect up to a total of 7 changers (but
there must not be more than 5 of one type of changer). When connecting more than
one changer to this receiver, you must use the Sony XA-C40 (item number
158XAC40) source selectors (up to three).
Optional Auxiliary Input: In
addition to the front panel aux input, you can connect another auxiliary audio
device (such as a portable digital memory player, cassette, MiniDisc, or VCR)
when used with the optional XA-300 UniLink Auxiliary Input Adapter (item number
158XA300). The XA-300 uses the UniLink and Bus Audio inputs on the back of the
receiver, and allows you to connect an optional CD/MD changer in addition to the
auxiliary audio source.