How We Test Car Audio Products

Here at, we don’t just throw car stereos in and hope for the best. We put them through a rigorous testing process before we even consider recommending them. This ensures you get a stereo that delivers exceptional sound quality, reliable performance, and a user experience that makes cruising a joy.

Behind the Scenes: Our Testing Procedures

  • Bench Testing (Aftermarket Only): We simulate real-world car connections to verify all the basics work flawlessly – powering on/off, buttons responding, radio tuning smoothly, and CDs playing flawlessly.
  • Installation Readiness:
    • Power & Ground Check: We use a multi-meter to confirm proper voltage at the power and ground connections, crucial for a stable electrical supply.
    • Speaker Compatibility: Each speaker is meticulously tested for correct polarity and impedance. This prevents damage to the stereo and ensures optimal sound quality.
  • Objective Performance Analysis:
    • Frequency Response: Specialized equipment measures the system’s output across the entire audible range (think 20Hz to 20kHz). We look for a flat response, indicating balanced reproduction of bass, mids, and treble.
    • Signal-to-Noise Ratio (SNR): This test reveals the level of unwanted noise (hiss, static) compared to the actual music. A higher SNR translates to cleaner, distortion-free sound.
    • Total Harmonic Distortion (THD): This measures the amount of distortion introduced by the amplifier as it boosts the signal. Lower THD signifies a more accurate and faithful reproduction of the original music.
How we Test Products
  • Subjective Listening Evaluation:
    • Audio Quality: We play a variety of music genres (classical, rock, pop) at different volumes. Our experts listen for clarity, detail, separation of instruments and vocals, and overall balance. Bass response is evaluated for depth, punch, and control to avoid any muddiness.
    • Imaging & Soundstage: We assess the system’s ability to create a realistic spatial presentation of the music. Ideally, you should be able to pinpoint the location of instruments within the virtual soundstage.
    • User Interface: Ease of use, intuitiveness of controls, and responsiveness of the touchscreen (if applicable) are all factored into the evaluation.
  • Expert Considerations:
    • Power Matching: We ensure the stereo’s power output perfectly complements the speaker’s power handling capabilities. An underpowered amplifier can struggle to drive the speakers, leading to distortion at high volumes.
    • Equalization & Processing: We evaluate the impact of tone controls, sound modes, and any built-in DSP (Digital Signal Processing) on the overall sound signature.
    • Value for Money: We weigh the performance and features against the car stereo’s price point. You deserve top-notch sound without breaking the bank.
  • Additional Factors:
    • Car Acoustics: Every car has unique acoustics that can influence the sound quality. We take note of any rattles or resonances caused by the installation.
    • Break-in Period: Some speakers need time to loosen up and reach their full potential. We consider how the sound might improve over time.

Our Car Stereo Selection Process: Prioritizing Performance and Usability

Before any car stereo hits our testing stations, our team carefully evaluates several key factors to ensure it meets our standards and offers the best possible experience for drivers. Here’s what we prioritize:

Sound Quality:

  • Power Delivery: We focus on RMS (Root Mean Square) wattage for a more accurate picture of power handling. Higher RMS translates to cleaner, undistorted audio even at high volumes.
  • Source Compatibility: Does the stereo play your preferred audio formats (MP3, FLAC, WAV) for high-fidelity playback? We ensure compatibility with a wide range of formats.
  • Sound Customization: We look for features like EQ controls, sound staging adjustments, or a built-in DSP (Digital Signal Processor) to give you the power to tailor the sound to your taste.


  • Touchscreen Display type: We select both double-DIN, and single-DIN radios from 7-inch to 10.1” so that it fits in most vehicles.
  • Connectivity Arsenal: Bluetooth (essential for safe hands-free calling), USB ports, auxiliary inputs, and smartphone integration (Apple CarPlay/Android Auto) are all on our must-have list.
  • Display Options: While touchscreens offer convenience, we also consider user-friendly button controls for safe adjustments while driving.
  • Extra Perks: CD players, satellite radio compatibility, navigation (if relevant), and voice controls are evaluated based on their potential value to the driver.

Usability for Safe Driving:

  • Clear Interface: An intuitive and easy-to-understand user interface is paramount for safe operation while on the road.
  • Steering Wheel Control Compatibility: We prioritize stereos that integrate seamlessly with your car’s steering wheel controls, minimizing distractions.

Additional Considerations:

  • Budget: Car stereos come in a variety of price points. We establish a budget range upfront to ensure we’re evaluating options that fit various needs.
  • Brand Reputation: We select stereos from well-established brands known for their quality products and reliable customer support.
  • Vehicle Compatibility: It’s crucial that the stereo fits your car’s dashboard and is compatible with your vehicle’s electrical system. We utilize online fitment guides or consult car audio specialists for verification.

By prioritizing these factors, our team selects car stereos with the potential to deliver exceptional sound quality, a feature-rich experience, and safe and intuitive usability for every driver.