iFi iDefender+ USB Power Isolator – Ground Loop Noise Reduction, HiFi Audio, High-Speed USB 3.0iFi iDefender+ USB Power Isolator & Ground Loop Noise Canceller Eliminate unwanted buzz, hum, and USB power noise from your audio chain with iFis iDefender+. Designed for audiophiles, it improves resolution, dynamic contrast, and overall audio clarity. Key Features Ground Loop Isolation: Detects and breaks ground loops that cause hum and distortion in your audio system. USB Power Cleaning: Blocks noisy USB power from the computer and feeds your DAC