I've been using a Behringer USB unit (I forget the model number). I never did get the free software that came with it to work. However it works great with Sony Soundforge.

Soundforge does a great job cleaning up the clicks and pops added by many years of abuse.
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975/7075/SMS-1
Aperion Verus Grand Towers & Bookshelves, Verus Forte Center, Infinity Surrounds, Ultra-X12
Oppo BDP-203, XBOX360, Xbox One
LG 65" OLED
RR2150 w/Klipsch SCR-2