Question There is a sound coming from my earcups when its not even connected, Why? Kraken TE

Oct 16, 2020
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Hey all,
Im using Kraken TE for 2 weeks and i realize a sound coming from headphones like rattling or rumbling. I switched all my usb ports, connected it without THX card nothing changed. Finally i realized the sound still coming from earcups when its not connected too. I never experience like this before. sounds like there is a monster in my earcups. Any idea why?