✅REMOVE UNWANTED NOISE - Active Noise Cancellation2 creates an equal but opposite signal to cancel background noise in the USB audio stream to enhance your audio ✅IMPROVE SOUND QUALITY - Reduces jitter and packet errors to provide clear, more dynamic sound. Music will seem clearer, more transparent and bass will be improved ✅RESTORE INTEGRITY - Rebalance the USB signal for less distortion and better audio ✅EASY TO USE - Simply plug directly into the USB port of your computer, compatible with high speed USB 3.0 and USB 2.0 devices ✅NEW AND IMPROVED - The iSilencer+ is an upgrade from the iSilencer3.0, with upgraded components, better sonic improvement, and USB A > A, USB C > A, and USB C > C versions available. In addition to improving the audio quality, the USB C > A iSilencer+ can be used as a converter adapter Does your USB audio system suffer from annoying background noise? The iFi iSilencer+ USB Rebalancer is a simple and direct upgrade for all USB ports and computer audio setups. This high tech device not just a noise filter, outfitted with Active Noise Cancellation (ANC) technology the iSilencer3.0 lowers RFI/EMI noise by up to 40dB, reduces jitter and packet errors, Rebalances the USB signal, and incorporates cutting edge engineering for optimum signal transfer. You'll hear blacker backgrounds, deeper details, extended dynamics, and greater clarity immediately. Whether you utilize a computer server or hard drive, have a high end system, the iSilencer+ is an excellent noise killer. Plus, employing iSilencer+ produces a cumulative effect. Designed to be used on both active and inactive USB ports, the more you use on your system, the more noise that gets eliminated. Simply plug in and enjoy your music again. Note: Sometimes diagnosing the source of noise issues can be a challenge. If your noise doesn't improve or gets worse, iFi has other solutions available and a wide variety of tools and resources to help you understand which product is best for your system.