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KDC-BT640U
CD/USB-Receiver with Bluetooth built-in, Spotify & Amazon Alexa ready
DISCONTINUED MODEL
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 Size | 1 DIN |
| Detachable Faceplate | Yes |
| Key Illumination | Variable LED |
| Rotary Encoder & Control Knob | Yes |
| Dual Accent Key | Handsfree & Voice Assistant |
| Back-up Memory | Tuner presets & menu settings |
| Attenuator with Smooth Volume Return | Yes |
| Touch Sensor Tone | Yes |
| Digital Clock (24H) | Yes |
| Clock display when power-off | default off |
| All-off Select (20/40/60 minutes) | Yes |
| Built-in Connector | Mitsumi, 16 pin |
| ISO connector | Yes, Mitsumi to ISO cable |
| Bluetooth unit built-in | Yes |
| USB interface x 1 | Yes, (Front) |
| Firmware upgreadable | Yes |
Display Features
| Display Type | Liquid Crystal Display (LCD) |
| Display Layout | 2 line text + custom icons |
| Vertical Aligment Liquid Crystal Display | Yes |
| Display Illumination | Variable by RGB LED |
| Dimmer Control | Manual / Set by Timer |
| Brightness control | 0 - 31 steps |
| Demo Mode | Yes |
| Menu text in selectable language | English(default) / Spanish / French / German / Russian |
Cosmetics features
| Dress plate | Piano Black |
| Preset key finish | Piano Black |
| Escutcheon finish | Piano Black |
| Volume & operation knob or wheel | Transparant Lighting & Chrome Finished Ring |
| Triangle Illumination | Red LED |
| Front terminals dust cover | Yes |
| Key illumination | Variable by RGB LED |
| Illuminated front USB port | Variable by RGB LED |
| Brightness Control (Key) | 0 - 31 step |
| Dimmer Control (Key) | Manual / Set by Timer |
| Variable color illumination | Yes |
| Color Zone Concept | 2 zone colour control |
| Brightness zone concept | 2 zone brightness control |
| Chrome-finished accents | Volume knod & faceplate |
Tuner Features
| Station Select | Manual / Preset |
| FM Reception | Yes |
| FM Stereo / Mono Selector | Yes |
| AM (MW/LW) Reception | Yes |
| Up/Down Seek/Scan | Yes |
| Tuner Presets (FM/AM) | 24 Presets (18FM / 6AM) |
| Mixed preset memory (FM & AM) | 6 presets |
| Automatic Memory Entry (AME) | Yes |
| Tuner Preset Back-up Memory | Yes |
| Radio Data System | Yes |
| Radio Text Plus | Yes |
| Traffic Information | Yes |
| Local search | Yes |
| AF Regional | Selectable: AF/AF Reg/OFF |
| Auto TP search | Yes |
| Enhanced Other Networks Function (EON) | Yes |
| Program Type Function (PTY) | Yes |
Playable Audio File
CD Features
| CD-R/RW Compatible | Yes |
| MP3, WMA & AAC playback | Yes |
| CD Text with special Character Support | English(default) / Spanish / French / German / Russian / Greek |
| D.A.C. processing | 24bit |
| 0 bit Mute | Yes |
| Random Function | DISC Random/Random OFF |
| Repeat Function | Track Repeat/All Repeat |
USB Features
| USB terminal | Yes, Front with dust cover |
| USB Type | 2.0 High speed |
| MP3, WMA, AAC, WAV, FLAC playback | Yes |
| Repeat/Scan/Random search | Yes |
| Repeat / Random Play | Yes |
| Direct search | Yes |
| Last Position Memory / Resume | Yes |
| Time code display | Yes |
| 1,5A Smartphone Quick Charge | Yes |
iPhone Features
| Made for iPod & iPhone * | Yes |
| USB Direct Control (Audio, 1 wire, Lightning-connector) | with optional cable KCA-iP103 |
| Music playback | Yes |
| Alphabet search | Yes |
| Skip search | Yes |
| Related search | Yes |
| Direct Search | Yes |
| iPod EQ Mode | Yes |
| Control by hand | Yes |
| App & iPod control mode | Yes |
| Spotify App Link | Yes |
| iAP over Bluetooth | Yes |
| iTunes Radio App | yes iAP1 |
| Reverse browsing | Yes |
| Battery charge + power control | Yes |
| * Always update to latest Apple firmware |
Audio Features
| Maximum Output Power | 50W x 4 |
| MOSFET Power IC | Yes |
| Auxiliary Type | Mini-jack, front panel |
| Pre-out | 2 RCA |
| Pre-out Output Level | 2.5V |
| Preout Rear / Subwoofer Switchable | Yes |
| Subwoofer Reference Level Adj. | Yes |
| 2-Way X'over network | Yes |
| 3-Way x'over (bi-amp connection) | Yes |
| Tone Control / Easy EQ | 13 band, 8 presets |
| Balance/Fader/Loudness Control | Yes |
| Bass Boost Circuit | Off/+1/+2/+3/+4/+5 |
| Att.(-20dB) with smooth Volume Return | Yes |
| Easy 3-band EQ mode | Yes |
| Graphic Equalizer + Preset | 13-Bands Graphic Equalizer with 8 Presets. |
| Digital Sound Processor (DSP) Built-in | Yes |
| Digital Time Aligment (DTA) | Yes |
| Low- & High-pass Filter | Yes |
| Speaker Size Control | Yes, Front/rear/subwoofer independently |
| Kenwood Sound Reconstruction | Yes |
| Sound Reconstruction | Yes |
| Space Enhancer | Yes |
| Sound Realizer | Yes |
| Stage EQ | Yes |
| Drive EQ | Yes |
Bluetooth General Features
| Max num. of regist. phones for HFP & A2DP | 5 phones |
| Hands Free Profile with High Sound Quality | HFP V1.7.1 |
| Max num. of regist. phones for HFP | 5 phones |
| 2 phones full time connection | Yes |
| Audio Streaming (A2DP) | Yes |
| High Quality Audio Streaming | SBC/AAC |
| Max num. of regist. units for A2DP | 5 units |
| Serial Port Profile (SPP) | Yes |
| Phonebook Access Profile (PBAP) | Yes |
| iPhone & Android automatic pairing via USB | Yes |
| KENWOOD Remote App Ready | |
| KENWOOD Music Mix Support | Yes |
| Amazon Alexa ready | Yes |
| Catchphone / Call Waiting | Yes |
| Private mode | Yes |
| Alphabet Search (Phonebook) | Yes |
| Noise Canceller | Yes |
| Echo Canceller | Yes |
| Phone device status display | Yes |
| Audio device status display | Yes |
| Signal strength display | Yes |
| Remaining battery display | Yes |
| Bluetooth Paring Indicator | Yes |
| High-quality noise canceling microphone | Rear Wired |
| Bluetooth firmware upgradeable | Yes |
| * depends on phone model/make | & Kenwood unit |
Connectivity
| Front USB & AUX Input | Yes |
| DC-Cord | Mitsumi to ISO |
| Power Control (P.CON) wire | Yes |
| Amplifier pre-out | 2 x RCA: Front + Rear/Sub (selectable) |
| FM Antenna Input | JASO connector |
| External microphone input | 3,5mm mini-jack |
| OEM Wired Remote Control ready | Yes |
Tuner Specifications
| FM range: 87.5Mhz - 108MHz (50Khz step) | Yes |
| FM Usable Sensitivity | 0.56μV/75ohm (S/N 30dBf) |
| FM Quieting Sensitivity | 1.58μV/75ohm (S/N 46dBf) |
| FM Frequency Response | 30Hz ~ 15kHz (± 3dB) |
| FM Signal to noise ratio (Mono) | 68dB |
| FM Stereo Separation (1kHz) | 40dB |
| MW range: 531kHz - 1611kHz (9kHz step) | Yes |
| MW Usable Sensitivity | 28.5μV |
| LW range: 153kHz - 279kHz (9kHz step) | Yes |
| LW Usable Sensitivity | 45μV |
Codec Specs
| MP3 Format | MPEG 1/2 Audio Layer 3-Files |
| WMA Format | in accordance with Windows Media Audio |
| AAC Format | AAC-LC “.aac”(CD&USB) and ".m4a"(USB) files |
| WAV Format | RIFF waveform Audio Format (only for LinearPCM) |
| FLAC Format | FLAC files (up to 96kHz/24bit) |
CD Specifications
| Laser Diode | GaAIAs |
| Digital Filter(D/A) | 8 Times Over Sampling |
| Digital/Analogue Converter | 24 Bit |
| Wow & Flutter | Below Measurable Limit |
| Frequency Response | 20Hz ~ 20kHz (±1dB) |
| Total Harmonic Distortion | 0.01% (1kHz) |
| Signal to Noise Ratio | 97dB (1kHz) |
| Dynamic Range | 92dB |
| Channel Separation | 85dB |
| MP3 Decoder | Compliant with MPEG-1/2 Audio Layer-3 |
| WMA Decoder | Compliant with Windows Media Audio |
| AAC Decoder | AAC-LC".aac" Files |
USB Specifications
| USB Version compatibility | USB 1.1 / 2.0 full speed |
| File System | FAT 32 / 16 / 12 |
| Maximum Supply current | 1500mA |
| D/A Converter | 24bit |
| MP3 Decode | Compliant with MPEG-1/2 Audio Layer-3 |
| WMA Decode | Compliant with Windows Media Audio |
| AAC Decode | "m4a" & "aac" file encoded by AAC-LC format |
| WAV Decode | Linear - PCM Files |
| flac Decode | FLAC files up to 96kHz/24bit |
Audio Specifications
| Maximum Power | 50 W x 4 |
| Output Power (DIN45324,+B=14.4v) | 22 W x 4 |
| Preout Level | 2500 mV / 10 kOhm, |
| Preout Impedance | ≤ 600 Ohm |
| Speaker Impedance | 4 Ohm ~ 8 Ohm |
| AUX Frequency Response | 20 Hz ~ 20 kHz (±1dB) |
| AUX Maximum Input Voltage | 1000 mV |
| AUX Input Impedance | 30 kOhm |
DSP Specifications
| Frequency band - Front | 62.5Hz ~ 16kHz |
| Equalizer Gain | –9db ~ +9db |
| Q Control | 0.25/ 0.50/ 1.00/ 2.00 |
| High Pass Filter frequency | Through/50 ~ 220 (Hz) |
| High Pass Filter Slope | -12/-18/-24 dB/Oct |
| Low Pass Filter frequency | 50 ~ 120(Hz)/Through |
| Low Pass Filter Slope | -12/-18/-24 dB/Oct |
| Time Alignment | 0 — 610cm(2 cm step) |
| Car type control | ► OFF ► COMPACT ► Full SIZE CAR ► WAGON ► MINIVAN ► SUV ► MINIVAN LONG |
| Equalizer Type | Graphic |
| Frequency band | 13 bands |
Bluetooth specifications
| Technology | Bluetooth V4.2 |
| Frequency | 2.402 - 2.48 GHz |
| Output power | +4dBm(max), 0dBm (AVE) power class 2 |
| Maximum range | Line of sight approx. 10 meter |
| Handsfree profile (HFP) | Yes |
| Serial port profile (SPP) | Yes |
| Advanced audio distribution profile (A2DP) | Yes |
| Audio Codec | SBC/AAC |
| Audio/Video remote control profile (AVRCP) | Yes |
| Phonebook access profile (PBAP) | Yes |
Accessories
| Release keys | 2 pieces |
| Escutcheon | Yes |
| Installation Sleeve | Yes |
| DC cord (Mitsumi to ISO) | 15 cm |
| Handsfree Microphone | with 3 m cable |
General Specifications
| Operating voltage | 14.4V (10.5 ~ 16V Allowable) |
| Maximum Current Consumption | 10A |
| Dark Current Consumption | Below 1mA |
| Dimensions (WxHxD) | 182 x 53 x 155.5mm |
| Weight | 1200 gr. |
| Operation Temperature Range | -10°C ~ 60°C |
| Instruction Manuals | Multi-language quick Guide |