Today I got the best digital source I ever heard. A LINN selekt Edition hub. I use it together with my NAGRA Classic DAC. It replaces an Auralic and a Nuprime. If you ever get the chance, try to listen!
My QLS Hi-Fi QA660 took 3 hours to sound good and about 400 hours to break in about 15 days @ 24x7 on repeat to no longer improve. To me it sounds like a $5K VRDS-type transport (this is a Teac/Esoteric very expensive clamping system for disc transports). Now maybe my Von Scheikert speakers...