Kenwood KDC-BT640U CD/USB/ Bluetooth built-in, Spotify
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 |
| AM (MW/LW) Reception | Yes |
| Tuner Presets (FM/AM) | 24 Presets (18FM / 6AM) |
| Preset memory w/o back-up power | Yes |
| Mixed preset memory (FM & AM) | 6 presets |
| Up/Down Seek/Scan | Yes |
| Automatic Memory Entry (AME) | Yes |
| FM Stereo / Mono Selector | 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 |
CE_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 |
| Resume play | Yes |
| Time code display | Yes |
| 1,5A Smartphone Quick Charge | Yes |
iPod 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 |
| Realizer | Yes |
| Stage EQ | Yes |
| Drive EQ | Yes |
Bluetooth General Features
| Hands Free Profile with High Sound Quality | HFP V1.7.1 |
| Max num. of regist. phones for HFP | 5 phones |
| 2 phones fulltime 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 |
| Spotify App Link | |
| 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 |