Features: 1. Ground Ring Isolator/Noise Filter helps reduce noise from car and home o electrical systems, providing high-fidelity sound quality output. A practical solution for car and home stereo noise issues. 2. Made of high-quality ABS fireproof shell, sturdy and durable. 3. Plug and play design; the o isolation transformer is easy to install without complicated tools and can be used once connections and cables are properly connected. White and red color options. 4. High-fidelity performance; the ground loop o noise reducer is compatible with car o systems, amplifiers, speakers, or mixers, offering stable performance, high precision, and reliability. Helps eliminate noise in car speakers and home stereo systems for improved sound quality. 5. Wide range of applications; the o noise isolator filter eliminates ground loop noise between the o source and the radio. Suitable for portable devices with o outputs, home stereo speakers, amplifiers, equalizers, and more. Material: ABS Product Size: Shell Size: Approximately 65 x 38mm; Gold-Plated Wire Length: Approximately 100mm Type: Adapter Cable Wire Core Type: Copper Core Interface: o Output Color: Black Package Contents: 1 x o Isolator Note: Light reflection and different displays may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3cm.