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Having one of these on hand is a must if you have a noisy USB host machine (e.g. most windows laptops.) Of course it’s not going to help eliminate noise (ground loop hum, etc.) in configurations where no USB connection is made.All noise I've ever had from any USB audio device was cured by these.
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iDefender+
Is your audio still plagued by hum and buzz? Using multiple plugs within your audio chain means separate earth/ground points. These multiple earth or ground points cause a ground loop problem. This creates an unwanted chain of noise, buzz and distortion. Struggle no more. iFi’s iDefender+...www.silentpower.tech
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Just need to make sure to connect the additional power on the side to it. I use the little 5W square apple usb power plugs that used to come with iPhones because I have a bunch of them sitting around.
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Also worth noting: there are a lot of these floating around at the ~$20 price point that either do nothing in the way of attenuating noise, or fail to make a connection at all. I finally found one (old fashioned trial and error) that cleaned up my PC’s USB schmutz for about $40.
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