Effective Noise Reduction: This comprehensive set includes 20 ferrite core noise suppression filter ring clips that significantly diminish radio frequency interference, enhancing the functionality of your electronics. Wide Compatibility: Suitable for various cables such as USB, FireWire, phone lines, power lines, and audio/video connections, offering versatility across different devices. UserFriendly Installation: With a dual design that easily attaches to cables, you can enjoy clearer signals without the hassle of complex installation processes. Five Size Options: This set features five distinct sizes (5mm, 5mm, 7mm, 9mm, 13mm), you find the right fit for your cables and devices to manage noise effectively. Use scenarios: Home theater and AV setups: attach to HDMI or AV cables to minimize interference and improve picture and sound quality. Computer and USB peripherals: clip onto USB and power cables near the PC or router to reduce EMI and achieve cleaner signal transmission. Audio equipment and recording: use on microphone, line, or patch cables in studios or practice spaces to reduce hum and improve audio clarity.