Hey Nick, thanks for the encouragement on my choice of cans/ amp combo. I'm really looking forward to everything arriving. Should be getting 6xx's this week
I've read through a lot of the Oppo discussion thread and have yet to find anyone addressing specifically using the line out from the HA2 (ie- to an external amp). Most people use the HA2 for portable use only.
Once I get the Little Dot mkiii I'm going to want to use it as my desktop amp but I only have the Oppo to do DAC duties currently.
My music files are on my computer. I'm using XLD (an app) to rip CDs into FLAC format. It also has a player and I've used it a bit although it seems a bit cumbersome so far to have to import the files/ folders. I just haven't gotten that far with it yet. I guess I've been spoiled by the iTunes interface. On my iPhone 6 I'm running an app called Onkyo HF which apparently does a better job with higher res files than iTunes and it is recommended on the Oppo thread. The interface with Onkyo is so so (not great) but the songs do sound good. If you have any other suggestions for players in the Mac environment I'd welcome them. I've started browsing HDtracks -- looking to experiment with 24/192 to see if I can notice differences from my CDs. I'm going to start by downloading Higher res files that I've already got on CD so I can compare them directly. I'll play them through XLD (on the Mac) or Onkyo on my phone.