and i say trust your ears and other head-fiers for me the benefits where too obvious!! thats all what i can help you with ^^ and i stated before who can benefit from it more than the other , laptops & desktops etc.
I would agree with Woo here, as an electrical engineer. We should assume he did due diligence and designed in appropriate power filtering as the DAC power reference is the most important thing to good sound. It doesn't hurt however to do additional passive filtering for the price was my opinion which is why i went with the simpler econo option and it sounds great so no harm no foul.
As much as I enjoy the WA7, it's probably going up for sale to fund an upgrade. The Rega DAC took the WA7 up a notch but I want more. Darn those HD800, they really do scale up. The plan is to supersize my DAC (the Rega went to my main A/V system), get a Naim DAC-V1 and then add a WA2 or the Ray Samuels Raptor.
Listening to the WA7 with the internal DAC as I write this and it's really nice. Decision, decisions. The Naim will have to blow me away tomorrow when I go back for a second audition. At least Jude likes it with the HD800 (as per the Winter Gift Guide).
i am also using the WA7's DAC its good and i don't feel like upgrading, else i will end up with a setup that is so revealing!! and thats not so good with j-pop since a lot of them are recorded badly :<
I am using the WA7 coupled with Exasound's e20 MkIII DAC. Love the sound! I wanted a DSD-capable DAC which the built-in WA7 DAC doesn't support. I listen to this setup with LCD-3's and I think it's all pretty awesome.
and i though that the WA7 is enough for the hungry HD800!! GOD!! people have to spend a fortune that worth the HD800 10 times just to be able to enjoy it!! its a big joke tbh..... i think there is better options....