Single DIN vs. Double DIN Car Stereos: What You Need to Know
If you're thinking about upgrading your car stereo, you’ve probably come across the terms Single DIN and Double DIN. These refer to the physical size of the head unit, but the difference goes beyond just dimensions. Each type offers unique features that can impact your audio experience, convenience, and even your car’s resale value.
This guide breaks down the history, technical specifications, and features of both Single DIN and Double DIN stereos so you can make an informed decision.
The History and Standardization of Car Stereo Sizes
Before car audio systems became standardized, manufacturers used various sizes for head units, making aftermarket upgrades difficult. In response, Germany’s Deutsches Institut für Normung (DIN) introduced DIN 75490, which defined a universal size for car radios. This was later adopted internationally as ISO 7736, establishing two standard dimensions:
- Single DIN – 180 mm wide × 50 mm tall (about 7" × 2")
- Double DIN – 180 mm wide × 100 mm tall (about 7" × 4")
Double DIN units are twice as tall as Single DIN units, which allows for larger displays and more features. This standardization made it easier to swap out factory-installed stereos with aftermarket upgrades.
📖 Source: ISO 7736 - Wikipedia
Single DIN vs. Double DIN: Features and Differences
Single DIN Stereos: Simple and Functional
Single DIN stereos are the more compact option and are commonly found in older vehicles or cars with limited dashboard space.
Common Features:
- Traditional physical buttons and knobs for volume and tuning
- AM/FM radio with standard tuning controls
- CD player (less common in newer models)
- Bluetooth connectivity for hands-free calling and music streaming
- Auxiliary and USB inputs for external devices
- Basic sound customization with EQ presets and bass/treble adjustments
Advantages:
- More affordable than Double DIN
- Easier to install in cars with limited dash space
- Simple, intuitive controls without relying on a touchscreen
Disadvantages:
- Limited display size, making advanced features harder to access
- No built-in touchscreen or navigation
- Fewer options for smartphone integration
Some premium Single DIN units feature flip-out touchscreens, allowing for advanced features without requiring a larger dashboard opening.
Double DIN Stereos: Modern and Feature-Packed
Double DIN stereos provide more space for advanced technology and multimedia functionality. Many newer vehicles come standard with Double DIN head units.
Common Features:
- Large touchscreen displays (typically between 6”–10”)
- Apple CarPlay and Android Auto for seamless smartphone integration
- Built-in navigation in some models
- Backup camera compatibility for added safety
- Advanced equalizers and digital signal processing (DSP) for better audio control
- Multiple inputs and outputs (USB, HDMI, SD card slots)
Advantages:
- Easier access to navigation, music, and phone apps
- Larger display makes controls more user-friendly
- More customization options for sound quality and system tuning
- Often includes support for rearview cameras, which is becoming a standard feature in modern vehicles
Disadvantages:
- Typically more expensive than Single DIN
- Requires a larger dashboard opening, which not all vehicles have
- Installation can be more complex
How to Choose the Right Stereo for Your Car
If you’re still unsure which option is best, consider the following:
| Feature | Single DIN | Double DIN |
|---|---|---|
| Screen Size | Small, may have flip-out touchscreen | Large touchscreen |
| Controls | Physical buttons/knobs | Touchscreen & voice control |
| Navigation | Requires external GPS | Built-in GPS (in premium models) |
| Backup Camera Support | Not common | Common |
| Smartphone Integration | Bluetooth only | Apple CarPlay & Android Auto |
| Audio Customization | Basic EQ settings | Advanced DSP & tuning options |
| Installation Complexity | Easier | May require dash modification |
Final Thoughts
- If you prefer physical controls and a straightforward setup, a Single DIN stereo is a great choice. It’s more affordable and works well for basic music and Bluetooth connectivity.
- If you want a touchscreen, navigation, and seamless smartphone integration, go with a Double DIN stereo. The larger screen makes it easier to use modern apps, and the additional features can improve your overall driving experience.
At Innosound™, we offer a range of high-quality Single DIN and Double DIN stereos. Whether you need a simple upgrade or a full multimedia system, we have options that fit your needs.
Sources & Further Reading
📖 ISO 7736 Standard: Wikipedia
📖 ISO 10487 Wiring Standard: Wikipedia
🔍 Crutchfield Guide to Car Stereos: Crutchfield
🔍 Best Buy Car Audio Store: Best Buy