I understand, and I suppose not everybody is looking for the same features/sound characteristics. That being said, based on Oppo's VFM track record, I had high hopes for the HA-1 as a DAC but until I've read enough comments/reviews to convince me that it is not yet another hyper-detailed but cold sounding analytical ESS based DAC I'll hold off.
As me and my ears get older I find myself longing more and more for that rich, meaty sound my memory associates with vintage gear.
My impressions in the other thread state that the HA-1 isn't cold or analytical at all. As mentioned, I was going to sell my LCD-XC because I found them to be too forward in the upper mids/treble, until I purchased the HA-1. With this combo I find the dynamics very punchy and the bass/lower mids very present and detailed. The bass texture is simply outstanding and sounds very, very natural, very real. The DAC is very much neutral to me with no cold or warm signature. What I feed it is what comes out with every nuance in tact.
The HA-1 has allowed the XC to perform to their full potential. The same goes for my other headphones. When I'm in the mood for a different sound signature I simply reach for different headphones now instead of trying to find the right synergy in the rest of the chain. HA-1 simply is a natural honest amp that fills the space of the headphone that's plugged in to it.
One thing that I would like to see (and I know others will strongly disagree) is bass/treble control. Not a full EQ but something to add a bit more flavour when the mood strikes. Much cheaper than tube rolling a tube amp (but not half as fun)!