AudioQuest JitterBug USB noise filter | Stereophile.com
Buy Dropship Products Of USB To USB Power Filter Board Noise Eliminator F Amplifier PC Power Purification In Bulk From Integrated Circuits | DHgate.Com
AudioQuest JitterBug USB noise filter | Stereophile.com
I found several ways to remove noise from USB audio cable. - Audio - Linus Tech Tips
Filtering the 5V USB power supply line | Andys Workshop
JEDAC - yet another take on a DIY high-end USB Audio DAC