Don't get me started on magical fix-it boxes. We are now in the second wave of USB tweaks IMO. The first wave we had full speed galvanic isolation, devices to fix the USB power, and some inline filters. Now with Jitterbug, Wyrd and Regen, there is a new wave of USB tweaking terror. Most of what I gather is the general approach is to jam as many of these devices as possible which doing little to improve the computer at one end or the DAC at the other. If one box doesn't fix it - just add more boxes. Thankfully I am cured of the madness and could see through the first wave devices as soon as I put them in my chain and took on a puzzled expression as the sound just became softer and a little more laid back, and lost micro detail. Maybe I just needed to add more of the devices and that would fix it LOL. The degree of turd polishing is amazing - not saying that USB is a turd - just that the limitations of a source and a DAC should not ideally be fixed by jamming reclocking boxes in the signal path. Thankfully my DAC has an USB input that surpasses external D/D so I have nothing to gain. Medical practitioners have the right mentality. First do no harm.