What brand is Volkswagen Sound audio system?

[NoraLee]

Volkswagen Sound is a brand under Uandk-Sound. Below are methods for selecting speakers: 1. Observe the speaker's appearance, color, and dimensions: The speaker should have a smooth and sleek shape with even and delicate coloring. Additionally, carefully inspect the joints, design, adjustment knobs, function buttons, and port placements on the speaker's body for reasonable distribution. High-quality speakers will have exquisite, neat, and clear markings. 2. Touch the speaker: The surface should feel smooth and polished; tapping the body should produce a firm and resonant sound, indicating durability and minimal sound distortion. Test the rotation and insertion/removal of knobs, switches, and ports—they should offer minimal resistance and operate smoothly. 3. Listen to the speaker's sound quality: First, turn the volume to maximum to check for noticeable noise. Play soft music to assess clarity and smoothness, and then play fast-paced, high-decibel music to test if the speaker has sufficient power to deliver impactful sound effects. Gradually adjust the volume to ensure even and natural increases or decreases. If the speaker produces a loud impact noise when turned off, it indicates subpar speaker quality and should not be purchased.