iFi iDefender MAX USB-C Ground Loop Isolator - Hi-Fi Noise ReduceriFi iDefender MAX Intelligent USB C Ground Loop Noise Eliminator Pure, Pristine Sound Awaits The iDefender MAX is a next generation, intelligent USB C ground loop breaker designed to eliminate hum, buzz, and unwanted noise in computer based audio systemswithout compromising safety or performance. If your speakers or headphones suffer from background noise caused by multiple earth connections in your audio chain, iDefender MAX delivers a clean,