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KDC-BT640U
  • KDC-BT640U
  • KDC-BT640U

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KDC-BT640U

CD/USB-Receiver with Bluetooth built-in, Spotify & Amazon Alexa ready

CD/USB-Receiver | Bluetooth HF & A2DP | Amazon Alexa app ready | iPhone/iPod | AUX | 2 Preouts.

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  • Bluetooth unit built-in
  • 2 phones fulltime connection
  • Audio Streaming (A2DP)
  • KENWOOD Music Mix Support
  • Amazon Alexa ready
  • Spotify App Link
  • Made for iPod & iPhone *
  • 1,5A Smartphone Quick Charge
  • Front USB & AUX Input
  • Variable color illumination
  • AM (MW/LW) Reception
  • KENWOOD Remote App Ready
  • FLAC files are playable
  • Detachable Faceplate
  • OEM Wired Remote Control ready
  • Digital Time Aligment (DTA)

Key Features

Bluetooth handsfree & audio streaming built-in
MP3/WMA/AAC/WAV/FLAC playback
DSP, DTA & 13-band EQ built-in
KENWOOD Remote app ready
KENWOOD Music Mix app ready
Amazon Alexa ready
13 digits, 1,5 Line Wide LCD Display
Variable Colour Illumination
English/Russian/Spanish/French&German GUI language
2 RCA (front + rear/sub) Preouts (2,5V)

General Features

DIN Size1 DIN
Detachable FaceplateYes
Key IlluminationVariable LED
Rotary Encoder & Control KnobYes
Dual Accent KeyHandsfree & Voice Assistant
Back-up MemoryTuner presets & menu settings
Attenuator with Smooth Volume ReturnYes
Touch Sensor ToneYes
Digital Clock (24H)Yes
Clock display when power-offdefault off
All-off Select (20/40/60 minutes)Yes
Built-in ConnectorMitsumi, 16 pin
ISO connectorYes, Mitsumi to ISO cable
Bluetooth unit built-inYes
USB interface x 1Yes, (Front)
Firmware upgreadableYes

Display Features

Display TypeLiquid Crystal Display (LCD)
Display Layout2 line text + custom icons
Vertical Aligment Liquid Crystal DisplayYes
Display IlluminationVariable by RGB LED
Dimmer ControlManual / Set by Timer
Brightness control0 - 31 steps
Demo ModeYes
Menu text in selectable languageEnglish(default) / Spanish / French / German / Russian

Cosmetics features

Dress platePiano Black
Preset key finishPiano Black
Escutcheon finishPiano Black
Volume & operation knob or wheelTransparant Lighting & Chrome Finished Ring
Triangle IlluminationRed LED
Front terminals dust coverYes
Key illuminationVariable by RGB LED
Illuminated front USB portVariable by RGB LED
Brightness Control (Key)0 - 31 step
Dimmer Control (Key)Manual / Set by Timer
Variable color illuminationYes
Color Zone Concept2 zone colour control
Brightness zone concept2 zone brightness control
Chrome-finished accentsVolume knod & faceplate

Tuner Features

Station SelectManual / Preset
FM ReceptionYes
AM (MW/LW) ReceptionYes
Tuner Presets (FM/AM)24 Presets (18FM / 6AM)
Preset memory w/o back-up powerYes
Mixed preset memory (FM & AM)6 presets
Up/Down Seek/ScanYes
Automatic Memory Entry (AME)Yes
FM Stereo / Mono SelectorYes
Radio Data SystemYes
Radio Text PlusYes
Traffic InformationYes
Local searchYes
AF RegionalSelectable: AF/AF Reg/OFF
Auto TP searchYes
Enhanced Other Networks Function (EON)Yes
Program Type Function (PTY)Yes


CD Features

CD-R/RW CompatibleYes
MP3, WMA & AAC playbackYes
CD Text with special Character SupportEnglish(default) / Spanish / French / German / Russian / Greek
D.A.C. processing24bit
0 bit MuteYes
Random FunctionDISC Random/Random OFF
Repeat FunctionTrack Repeat/All Repeat

USB Features

USB terminalYes, Front with dust cover
USB Type2.0 High speed
MP3, WMA, AAC, WAV, FLAC playbackYes
Repeat/Scan/Random searchYes
Repeat / Random PlayYes
Direct searchYes
Resume playYes
Time code displayYes
1,5A Smartphone Quick ChargeYes

iPod Features

Made for iPod & iPhone *Yes
USB Direct Control (Audio, 1 wire, Lightning-connector)with optional cable KCA-iP103
Music playbackYes
Alphabet searchYes
Skip searchYes
Related searchYes
Direct SearchYes
iPod EQ ModeYes
Control by handYes
App & iPod control modeYes
Spotify App LinkYes
iAP over BluetoothYes
iTunes Radio Appyes iAP1
Reverse browsingYes
Battery charge + power controlYes
* Always update to latest Apple firmware

Audio Features

Maximum Output Power50W x 4
MOSFET Power ICYes
Auxiliary TypeMini-jack, front panel
Pre-out2 RCA
Pre-out Output Level2.5V
Preout Rear / Subwoofer SwitchableYes
Subwoofer Reference Level Adj.Yes
2-Way X'over networkYes
3-Way x'over (bi-amp connection)Yes
Tone Control / Easy EQ13 band, 8 presets
Balance/Fader/Loudness ControlYes
Bass Boost CircuitOff/+1/+2/+3/+4/+5
Att.(-20dB) with smooth Volume ReturnYes
Easy 3-band EQ modeYes
Graphic Equalizer + Preset13-Bands Graphic Equalizer with 8 Presets.
Digital Sound Processor (DSP) Built-inYes
Digital Time Aligment (DTA)Yes
Low- & High-pass FilterYes
Speaker Size ControlYes, Front/rear/subwoofer independently
Kenwood Sound ReconstructionYes
Sound ReconstructionYes
Space EnhancerYes
RealizerYes
Stage EQYes
Drive EQYes

Bluetooth General Features

Hands Free Profile with High Sound QualityHFP V1.7.1
Max num. of regist. phones for HFP5 phones
2 phones fulltime connectionYes
Audio Streaming (A2DP)Yes
High Quality Audio StreamingSBC/AAC
Max num. of regist. units for A2DP5 units
Serial Port Profile (SPP)Yes
Phonebook Access Profile (PBAP)Yes
iPhone & Android automatic pairing via USBYes
Spotify App Link
KENWOOD Remote App Ready
KENWOOD Music Mix SupportYes
Amazon Alexa readyYes
Catchphone / Call WaitingYes
Private modeYes
Alphabet Search (Phonebook)Yes
Noise CancellerYes
Echo CancellerYes
Phone device status displayYes
Audio device status displayYes
Signal strength displayYes
Remaining battery displayYes
Bluetooth Paring IndicatorYes
High-quality noise canceling microphoneRear Wired
Bluetooth firmware upgradeableYes
* depends on phone model/make& Kenwood unit

Connectivity

Front USB & AUX InputYes
OEM Wired Remote Control readyYes
DC-CordMitsumi to ISO
Power Control (P.CON) wireYes
Amplifier pre-out2 x RCA: Front + Rear/Sub (selectable)
FM Antenna InputJASO connector
External microphone input3,5mm mini-jack

Tuner Specifications

FM range: 87.5Mhz - 108MHz (50Khz step)Yes
FM Usable Sensitivity0.56μV/75ohm (S/N 30dBf)
FM Quieting Sensitivity1.58μV/75ohm (S/N 46dBf)
FM Frequency Response30Hz ~ 15kHz (± 3dB)
FM Signal to noise ratio (Mono)68dB
FM Stereo Separation (1kHz)40dB
MW range: 531kHz - 1611kHz (9kHz step)Yes
MW Usable Sensitivity28.5μV
LW range: 153kHz - 279kHz (9kHz step)Yes
LW Usable Sensitivity45μV

Codec Specs

MP3 FormatMPEG 1/2 Audio Layer 3-Files
WMA Formatin accordance with Windows Media Audio
AAC FormatAAC-LC “.aac”(CD&USB) and ".m4a"(USB) files
WAV FormatRIFF waveform Audio Format (only for LinearPCM)
FLAC FormatFLAC files (up to 96kHz/24bit)

CD Specifications

Laser DiodeGaAIAs
Digital Filter(D/A)8 Times Over Sampling
Digital/Analogue Converter24 Bit
Wow & FlutterBelow Measurable Limit
Frequency Response20Hz ~ 20kHz (±1dB)
Total Harmonic Distortion0.01% (1kHz)
Signal to Noise Ratio97dB (1kHz)
Dynamic Range92dB
Channel Separation85dB
MP3 DecoderCompliant with MPEG-1/2 Audio Layer-3
WMA DecoderCompliant with Windows Media Audio
AAC DecoderAAC-LC".aac" Files

USB Specifications

USB Version compatibilityUSB 1.1 / 2.0 full speed
File SystemFAT 32 / 16 / 12
Maximum Supply current1500mA
D/A Converter24bit
MP3 DecodeCompliant with MPEG-1/2 Audio Layer-3
WMA DecodeCompliant with Windows Media Audio
AAC Decode"m4a" & "aac" file encoded by AAC-LC format
WAV DecodeLinear - PCM Files
flac DecodeFLAC files up to 96kHz/24bit

Audio Specifications

Maximum Power50W x 4
Output Power (DIN45324,+B=14.4v)22W x 4
Preout Level2500mV / 10kOhm,
Preout Impedance≤ 600Ohm
Speaker Impedance4Ohm ~ 8Ohm
AUX Frequency Response20Hz ~ 20kHz (±1dB)
AUX Maximum Input Voltage1000mV
AUX Input Impedance30kOhm

DSP Specifications

Frequency band - Front62.5Hz ~ 16kHz
Equalizer Gain–9db ~ +9db
Q Control0.25/ 0.50/ 1.00/ 2.00
High Pass Filter frequencyThrough/50 ~ 220 (Hz)
High Pass Filter Slope-12/-18/-24 dB/Oct
Low Pass Filter frequency50 ~ 120(Hz)/Through
Low Pass Filter Slope-12/-18/-24 dB/Oct
Time Alignment0 — 610cm(2 cm step)
Car type control► OFF
► COMPACT
► Full SIZE CAR
► WAGON
► MINIVAN
► SUV
► MINIVAN LONG
Equalizer TypeGraphic
Frequency band13 bands

Bluetooth specifications

TechnologyBluetooth V4.2
Frequency2.402 - 2.48 GHz
Output power+4dBm(max), 0dBm (AVE) power class 2
Maximum rangeLine of sight approx. 10 meter
Handsfree profile (HFP)Yes
Serial port profile (SPP)Yes
Advanced audio distribution profile (A2DP)Yes
Audio CodecSBC/AAC
Audio/Video remote control profile (AVRCP)Yes
Phonebook access profile (PBAP)Yes

Accessories

Release keys2 pieces
EscutcheonYes
Installation SleeveYes
DC cord (Mitsumi to ISO)15 cm
Handsfree Microphonewith 3 m cable

General Specifications

Operating voltage14.4V (10.5 ~ 16V Allowable)
Maximum Current Consumption10A
Dark Current ConsumptionBelow 1mA
Dimensions (WxHxD)182 x 53 x 155.5mm
Weight1200 gr.
Operation Temperature Range-10°C ~ 60°C
Instruction ManualsMulti-language quick Guide