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Durable Blaupunkt Denver 412 DAB car radio

Heavy Duty 1DIN car radio with DAB+, Bluetooth and 2× USB
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Blaupunkt Denver 412 DAB

Blaupunkt Denver 412 DAB is a robust 1DIN car radio from the Heavy Duty series, designed primarily for tractors, agricultural machinery, vans, motorhomes, buses, trucks and construction equipment. It offers DAB/DAB+, FM/AM tuner, Bluetooth 5.0, two USB inputs, AUX, a 3‑band semi-parametric equalizer and 4 × 50 W power. Thanks to rubberized controls, a matte non-reflective surface, permanent memory and an installation depth of only 76 mm, it is also suitable for demanding work environments.

DAB+ and High‑End CODEM tuner

Denver 412 DAB uses the High‑End Blaupunkt CODEM tuner and supports FM, AM, DAB and DAB+. It offers Radiotext/DLS, automatic station saving, Service Following and an alphabetical list of DAB stations. The memory holds 15 FM, 10 AM and 15 DAB stations.

Bluetooth 5.0

Integrated Bluetooth 5.0 LE supports hands-free calling and music streaming. The radio works with both internal and external microphones, provides access to a phonebook of up to 1000 numbers and supports Siri, Google Assistant and Alexa. It remembers the last 5 paired devices and can have 1 device connected at a time.

2× USB and wide format support

The radio features front and rear USB‑A ports. It supports FAT16, FAT32 and exFAT, USB media over 128 GB and more than 20,000 files or folders. The manufacturer's latest list shows support for MP2, MP3, WMA, FLAC, M4A/AAC, APE and WAV. Direct control of compatible Apple iPod/iPhone devices via front and rear USB is also supported.

3‑band semi‑parametric equalizer

Denver 412 DAB features a true 3‑band semi‑parametric equalizer, Bass/Treble, Balance/Fader, Loudness and sound presets Rock, Pop and Classic. The built‑in amplifier delivers 4 × 50 W max. / 4 × 24 W RMS at 14.4 V. There are 4‑channel RCA pre‑outs and a dedicated stereo Sub‑Out with adjustable level and frequency.

Heavy Duty design

The radio features large rubberized buttons, a rubber protective frame and a matte surface to reduce glare. The front USB is protected by a rubber cover against dust and dirt. Permanent memory retains settings and stored stations even when main power is disconnected.

Main features

  • Heavy Duty design for work and utility vehicles.
  • Digital tuner DAB/DAB+.
  • High‑End Blaupunkt CODEM FM/AM tuner.
  • Bluetooth 5.0 LE for hands-free and music streaming.
  • Memory of the last 5 paired devices.
  • Internal and external hands-free microphone.
  • Two USB‑A ports – front and rear.
  • Support for MP2, MP3, WMA, FLAC, M4A/AAC, APE and WAV.
  • Apple iPod/iPhone support via USB.
  • 3‑band semi‑parametric equalizer.
  • Loudness and sound presets.
  • Maximum power 4 × 50 W.
  • 4‑channel RCA pre‑out.
  • Dedicated stereo Sub‑Out.
  • Analog programmable input for steering wheel control.
  • Multicolor illumination with 7 colors.
  • Front 6.3 mm microphone input for announcements.
  • Permanent memory for settings and stations.
  • Ultra‑short installation depth of only 76 mm.

Technical specifications

  • Car radio format: 1DIN.
  • Power supply: 12 V.
  • Tuner: FM / AM / DAB / DAB+.
  • DAB range: 174.928–239.200 MHz.
  • Station memory: 15× FM / 10× AM / 15× DAB.
  • Bluetooth: 5.0 LE.
  • Bluetooth profiles: A2DP, AVRCP, HFP, SPP.
  • Bluetooth codecs: AAC, SBC.
  • Number of paired devices: 5.
  • Simultaneously connected devices: 1.
  • Internal microphone: Yes.
  • External microphone: Yes.
  • Front USB: Yes.
  • Rear USB: Yes.
  • Memory card: No.
  • CD mechanism: No.
  • USB formats: MP2, MP3, WMA, FLAC, M4A/AAC, WAV.
  • Apple iPod/iPhone: Yes.
  • AUX: Yes, rear RCA.
  • Microphone input: Yes, 6.3 mm front.
  • Equalizer: Yes, 3‑band semi‑parametric.
  • Loudness: Yes.
  • Sound presets: Rock, Pop, Classic.
  • Maximum power: 4 × 50 W.
  • RMS power: 4 × 24 W at 14.4 V.
  • RCA pre-out: 4 channels / 2 pairs, < 2 V.
  • Sub-Out: 2 channels / 1 pair RCA.
  • SWC: Yes, analog and programmable.
  • Illumination: Multicolor, 7 colors.
  • DAB antenna input: SMB with 12V phantom power.
  • FM antenna input: DIN/ISO.
  • Front panel: Fixed.
  • Body dimensions: 50 × 178 × 76 mm.
  • Weight: Approximately 0.6 kg.

What's in the box

  • Blaupunkt Denver 412 DAB car radio.
  • External Bluetooth microphone.
  • ISO A/B connection cable.
  • DIN/ISO antenna adapter.
  • Removal tools.
  • User manual.

About the brand

Blaupunkt is a traditional, globally recognized brand with a long history in automotive electronics. For decades it has been associated primarily with car radios and practical automotive accessories. Today’s range includes modern car radios with Bluetooth, hands-free, DAB+ digital radio, USB, and support for Apple CarPlay and Android Auto. Popular retro-style models combine classic looks with current technologies and are ideal for youngtimers and classic cars where preserving the original interior appearance and atmosphere is important. The brand also offers subwoofers, vehicle antennas, reversing cameras, monitors, and other installation accessories. Blaupunkt appeals to drivers who look for a familiar brand, simple and functional solutions, good compatibility, and a balanced price-performance ratio.

Catalog numberDENVER 412 DAB
BrandBlaupunkt
LinksOfficial web presentation
Car radio sizeCar radios are divided into 2 basic sizes, 1DIN car radios and 2DIN car radios .

1DIN size car radios - the exact dimensions including the metal frame where the car radio is inserted are 184 x 53 mm, the external dimensions of the branded 1DIN car radio are 188 x 59 mm.

We know 2DIN car radios from newer vehicles, a classic example is the VW Golf IV with navigation. The dimensions of a 2DIN car radio without a metal frame are 180 x 101 mm, the external dimensions of a branded 2DIN car radio are 189 x 119 mm.
1DIN
CD driveCar radios with CD drive. Car radios that have an input slot for inserting a CD. No
Integrated BluetoothBluetooth is a communication technology used for wireless connection between two or more electronic devices. A mobile phone, for example, can be connected to a car radio with built-in Bluetooth. Most car radios for 2017 and later can also wirelessly stream (play) music via Bluetooth -> A2DP function. Yes
USB inputThe USB input of the car radio is used to connect a USB flash drive or smartphone. Today, playing music via USB is the most popular way to listen to music in the car. The USB input can be front (on the front panel of the car radio) or rear (on the back of the cable). Yes
SD card accessModern branded car radios can play SDHC SD cards up to 32 GB, sometimes even 64 GB. The SD card slot is behind the front panel in most car radios. No
Supported formats via USB inputList of all supported formats (MP3, AAC, Flac, DivX, etc.) that the car radio can play via USB input. MP2, MP3, WMA, FLAC, M4A/AAC, APE, WAV
Apple CarPlayApple CarPlay is a completely new option for connecting a smartphone to a car radio that has the Apple CarPlay function. The connection is only by cable, thanks to the high data flow. You click on the Apple CarPlay icon on the car radio screen and application icons appear on the car radio screen like on a smartphone, and you can continue to control everything using the car radio. It also works with voice control and Siri. No
Android AutoGoogle's Android Auto is a completely new option for connecting a smartphone to a car radio that has the Android Auto function. The connection is only by cable, thanks to the high data flow. The Android OS requirement is at least version 5.0. You click on the Android Auto icon on the car radio screen, and application icons appear on the car radio screen like on a smartphone, and you can continue to control everything using the car radio. Voice control and GPS signal also works. No
Car radio performanceThe performance of the car radio shown in maximum values. This is therefore the MAX value. The performance of the internal amplifier of the car radio. Today, the RMS power of a car radio ranges from 17 - 30 W RMS per channel. 4 x 50 W
Number of RCA outputsRCA outputs , colloquially called "cinches", are used to connect an external amplifier or active subwoofer. Aftermarket car radios are usually equipped with 1 to 3 pairs of RCA outputs. FRONT, REAR and SUB are used.

It also depends on how many volt outputs the car radio is equipped with. More basic models of car radios have 2V outputs, more expensive units have 4V and more. The higher the specified value, the less power demands are placed on the external amplifier and the sound quality increases.
3 pairs
Input for steering wheel button control adapterCar radios equipped with a cable input or a 3.5 Jack socket for an adapter to control the buttons on the steering wheel. Most branded car radios have this input, from the back of the car radio body. Yes
Backlit buttonsColor options for the backlight of the car radio buttons. White
External microphone included in the packageThe external microphone is connected from the back of the car radio to the input marked "MIC". For ideal sound quality during a phone call, we recommend placing the external microphone on the left "A" pillar at the point where the "A" pillar and the roof panel connect to each other. A very good position to place an external microphone is also near the central rear-view mirror. Yes
Remote control includedCard IR remote control of the car radio, thanks to which certain functions of the car radio incl. control the volume from the hand, remotely. No
Removable front panelPossibility to remove the entire front panel of the car radio by pressing the side button. A very effective weapon against car radio theft. We recommend not hiding the panel in the vehicle, but taking it with you. Alternatively, place the panel in a hidden place in the trunk, but not when leaving the car, but before parking. You never know when a thief might be watching you. No

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