IFI AUDIO IDEFENDER+ Anti Ground Loop Filter Male USB-A to Female USB-A - reviews - There are 2 reviews.

Great device!
I have a Chinese DAC that is powered by USB, but there is no noise filtering from the current, so I needed to feed it with clean electrical signal. Ifi Defender+ does a perfect job for this - I'm using a smartphone power supply now, but I'm thinking of buying an Allo Nirvana to further improve the sound quality.

Ne change rien sur ma config
Toujours autant de bruits parasites même avec le idefender+ :/