I bough a used AQ dragon on audiogon once. I’ll never know if it was legitimate or a chinese knockoff
as you can see if you research, the dragon PC prices fluctuate dramatically. I actually used mine for a few months but I dont believe aftermarket PCs work that well with gryphon amps. And they test their stuff with their own cords and even provide their cords for you if you buy the Apex.
I wasnt seeing a huge improvement given the price, so I sold it for a rather large profit...
Hence my issue with buying this item on this website. I wouldnt buy used unless full documentation. Or just buy new haha