Flip-Down/Detachable Face: The CDX-GT640UI
features a manual fold-down face which provides a larger display and greater
protection for the player's CD-slot and your CD discs. In addition, the unit
features a detachable face for theft prevention. The radio does not come with a
protective face case.
Motion Display: This feature
shows moving patterns and a spectrum analyzer on the display when turned on.
Auto Scroll: This feature
allows long displayed items to scroll automatically across the display when the
track is changed on a disc.
Illumination/Clock Display: Pressing the Off button once will turn off audio output, but the clock display
and 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.
Dimmer: To change the brightness of the display you can set the
CDX-GT640UI to one of three dimmer modes - Dimmer Auto (dims the display
automatically when you turn your vehicle's lights on), Dimmer Off (deactivates
the dimmer), and Dimmer On (display always dim).
Contrast: You can adjust the contrast level of the headunit's display
for better day- and night-time viewing. The contrast level is adjustable in 7
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.
Button Illumination: You can change the heaudnit's button illumination
to blue or green to better match your vehicle's interior dash lighting.
True Fidelity Sound Construction: The Sony Xplod CDX-GT640UI FM/AM compact disc player features a newly developed
sound processor for less distortion, an S-MOSFET IC for smooth signal
transmission, and a large-sized capacitor for deep bass sound.
CEA2006 Compliant Amplifier: The power specifications for
the Sony Xplod CDX-GT640UI are compliant with the CEA2006 Mobile Amplifier Power
Testing and Measurement standards from the Consumer Electronics Association (CEA).
These standards were developed as a way to equitably compare power specs from
model to model and between manufacturers. The power output specs for the
CDX-GT640UI are as follows:
- Continuous Power Output: 17 watts RMS x 4 channels (at 4 ohms,
20Hz-20kHz, 1% THD-N)
- Peak Power Output: 52 watts x 4-channels (208 total watts)
Digital Music Plus Advanced: The Sony CDX-GT640UI features Digital
Music Plus Advanced which is an enhancer technology used to reproduce detail and high
frequency sound from compressed audio.
EQ3 Stage 2: The Sony Xplod
CDX-GT640UI features an EQ3 Stage 2 equalizer with 8 preset equalizer curves for
various types of music. You can choose from Xplod, Vocal, Edge, Cruise, Space,
Gravity, Custom, or Off. The Off mode provides a flat response. The Custom
mode allows you to manually adjust the Low (60 Hz), Mid (1 kHz), and
High (10 kHz) frequencies from +/-10dB.
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.
Loudness: This features reinforces bass and treble for clear
sound at low volume levels.
Three 2-Volt Preamp Outputs with Adjustable Crossovers: The CDX-GT640UI contains three pairs of
2-volt RCA preamp outputs for the front and rear channels and for subwoofer operation. A built-in LPF (Low Pass Filter) and HPF (High Pass Filter) work to deliver
overall better sound, and