I understand feature differences. But if you look at the specs of both, they are both well into the range of overkill. You can measure a difference, but human ears can't hear it. The HA-1 may be closer to the sound of a Oppo X05, but I failed at detecting a difference with that too. Audibly transparent is audibly transparent.
Perhaps the greatest contribution to the "improved" sound quality of high end Oppos is the sales literature, which is great at evoking expectation bias. I just did a basic controlled listening test and I was able to eliminate that. There's no audible difference.
That reply seems to indicate that you don't care to know the truth one way or the other. I think differently than that. If you don't test to find out if you're getting the result you want, then everything you do is just random flailing hoping something ends up working. I actually want to work to improve my system. I don't want to just pay money and trust someone else to do that for me. The fun isn't in ownership, it's in solving the problems. But they have to be problems that actually exist, not ones that are manufactured out of whole cloth to convince someone to spend more money.
I bought my Oppo player because it was region free modded with simple switching between regions, it could play MKV files off a thumb drive, and it had very good image adjustments (i.e.. Darbee). I choose for features I can use, not abstract claims of sound quality I can't hear.
I compare every piece of equipment I own for audible transparency. It isn't just the Oppo and the WalMart player, it's blu-ray players by Sony and Pioneer, Oppo's top of the line headphone amp/DAC, a high end SACD player by Philips, my numerous Macintosh computers, a variety of iPods and several generations of iPhone. They all sound the same. Perfect. No one else has to take my word for it. They can do their own test and find out for themselves. But the fact that I've actually gone to the trouble to carefully compare should count for something beyond someone who says they have no interest in anything but purely subjective impressions.
There are degrees of legitimacy to claims. For my purposes, I don't need to go to the extremes that someone publishing a paper for the AES would be required to do. But that doesn't mean that my careful comparison testing is no better than someone who depends entirely on their impressions.