The powered hub is quieter than going direct into the back of the computer. I've tried that. I'd guess the hub is 30% quieter. And the hub, with power, is quieter than the hub with the power unplugged.

Has anyone tried the Wyrd "Decrapifier?"
http://www.amazon.com/dp/B00LFVMC9U/ref=...=I1Q9C10RNUR2XG
If that device doesn't work, I can always return it. This is my next to last resort to try before addressing the problem with Outlaw.

I assume my USB input on the Outlaw amp should be dead quiet (using fairly sensitive headphones), even with the volume up at 50% or more.


Edited by Clarinet (01/20/15 10:40 AM)
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Outlaw RR2150, Definitive BP8040 speakers (2), Behringer 9 band graphic equalizer. Music sources: CDs, ripped CDs, MP3, some FLAC via desktop computer; tablets via Bluetooth receiver on Outlaw amp.