Hello, I purchased this DAC as a dealer demo 2 weeks ago and I had it hooked up for just 3 days (10 hours total). I'm sticking with my SOTM DAC although the QB-9 has the better resolution by far (ESS SABRE). This is an original DSD model (not an older upgraded Ayre QB-9 DAC) Absolutely perfect. Listing this conservatively at 9/10 although I can't think of a single reason why. Comes complete in the factory packaging, with manual, power cord, and USB cord. Shipping double boxed, of course. Payment by Paypal, Money Order, or Certified Check is OK. Paypal will require the 3% fee. I'll cover the shipping costs CONUS. I have perfect feedback at A'gon, Ebay, and Headfi so please ask me for it. Contact me with any questions. Thanks /////
