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Ground loops. When you get them, the first thing you'll want to do is get rid of them. The iDefender 3.0 is designed to eliminate those droning ground-loop issues while at the same time reducing the noise-floor of the entire system! This is great news for audiophiles, musicians, professionals, or anybody who cares about sound and has a ground-loop issue with their PC-based system. Please note that if you own a DAC that receives its power from the computers USB hub, then you'll want to tether the iDefender up with a 5v iPower supply (sold separately). This will physically disconnect the power coming from your PC, and replace it with clean external power.
• Breaks noisy ground loops from your USB output
• Disconnects the USB power from the PC and replaces it with a clean external power for your DAC
• Significantly reduces system noise floor and makes for better dynamic contrast, warmth and resolution
• Small and compact with simple plug-n-play connection
• USB 3.0 and 2.0 compatible for optimal, high speed data transfer