Probably because the Wyred dac uses discrete outputs and has a much more substantial power supply. Just because 2 units use the same dac chip does not mean they will sound the same.
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The difference you are hearing is the higher quality of the external DAC versus the one in the Oppo. What you have not yet experienced is how good the DAC2 really is. Feed it a really low jitter digital signal and you will experience this as well. The ATV and the Oppo are not going to cut-it. They will ultimately hold-back the DAC2.
Mrvco: Have not done the Blind A/B, but have some friends coming over this weekend and I intend to. They difference was really noticeable.
OK, Audioengr. Please forgive my newbieness. Help me understand the best way to provide a very low jitter source. I have a Mac Mini via USB to the DAC now and use bit perfect. I had tried pure audio awhile ago, but with the Jolida DAC, I could never justify the cost.
Thanks for the help in advance.
Steve Nugent is correct.
The WFS is a very good DAC when fed with a low jitter source such as Steves Off-Ramp (the best - but unfortunately most expensive) or Audiophilleo 2 (probably the best bang for buck).
Via the WFS internal USB it's a bit ordinary - dull, slightly sibilancey with a cold although squeaky clean top end. That said I am not surprised at what you heard - a comparison I was at it was better than a modified Oppo - but it really is good when fed via a low jitter source. The detail is really stunning that way - although still slightly analytical for my taste - but that is a personal preference sort of thing.
Ok... In the words of Neil Peart. "What a fool I have been" Channel D Pure Audio is great and I should never tried Digital audio from my mac and USB without it. Now I guess I have to check out Off-Ramp or Audiophilleo.
My concern is with my Amp/Speakers, et al. Am I overdoing it?
If you look at my system, I am currently looking to upgrade speakers.