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Blaupunkt Stockholm 400 DAB car radio

1DIN car stereo with a digital DAB+ tuner, CD player, Bluetooth hands-free, USB/AUX inputs
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Blaupunkt Stockholm 400 DAB car stereo

The Blaupunkt Stockholm 400 DAB is a versatile car stereo in the classic 1DIN format that elevates daily driving with enhanced entertainment and comfort. Thanks to its modern DAB+ digital tuner it offers stable reception of a wide selection of radio stations in high audio quality without interference, complemented by a classic FM/AM tuner for traditional broadcasts. The Stockholm 400 DAB features a built-in CD player, a front USB port and a rear AUX input, enabling music playback from various sources – from CDs and USB flash drives to external devices. Support for formats such as MP3, WMA, FLAC and WAV ensures broad compatibility with modern audio files.

Bluetooth technology allows convenient hands-free calling and wireless music streaming, and additionally supports access to voice assistants (e.g. Siri, Google, Alexa) and displays track information. The Stockholm 400 DAB also includes an input for steering wheel remote control, multi-color illumination of controls and an intuitive interface that ensures comfortable operation while driving. This car stereo combines traditional features with modern connectivity, offering a complete audio solution for your car – ideal for drivers who want great sound, multiple playback options and convenient controls in one device.

Main features

  • 1DIN car stereo with classic design and robust construction.
  • DAB+ digital tuner for clear digital radio reception.
  • FM/AM tuner with easy station tuning.
  • Built-in CD player for audio CDs, CD-R and CD-RW discs.
  • Front USB port for music playback from USB devices.
  • Rear AUX input for external audio sources.
  • Bluetooth hands-free and music streaming with track information display support.
  • Apple iPod support and access to voice assistants.
  • Output power 4×50 W with subwoofer outputs.
  • Multi-color illumination and DIM function to adapt controls.
  • Steering wheel control input (SWC) and option for remote control.
  • Support for popular audio formats: MP2, MP3, WMA, FLAC, M4A/AAC, WAV.

About the brand

Blaupunkt is a traditional and globally recognized brand with a long history in automotive electronics, associated for decades with high-quality car stereos and speakers. Blaupunkt car stereos stand out for reliable operation, intuitive controls and broad compatibility with modern technologies such as Bluetooth, hands-free, DAB+ digital radio or playback from USB and mobile devices. This makes them an ideal choice for everyday use and long journeys. Blaupunkt speakers offer balanced, clear sound, easy installation and long service life - they are a practical solution for replacing factory speakers or for a basic audio upgrade in your car. The Blaupunkt brand appeals to drivers seeking proven quality, functionality and a good price-performance ratio without having to invest in complex or unnecessarily expensive solutions.

Catalog numberSTOCKHOLM 400 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. Yes
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). MP2, MP3, WMA, FLAC, M4A/AAC, WAV
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, 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
Output level on RCAAn important parameter if you are going to install an external amplifier. If you purchase a car radio with a basic value, i.e. 2V outputs, then greater demands will be placed on the power of the amplifier. As the value increases, e.g. 4V or 5V, the power of the external amplifier increases significantly, in layman's terms.

A car radio with strong outputs therefore has the advantage that you do not pull so much power through the amplifier and thus achieve a better sound, as external amplifiers lose control at higher loads.
2 V
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. Multicolor
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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