Why would hearing ability be any different than strength, intelligence, dexterity, vertical leap? 

Sure you can train it, but some things people will naturally be better than others, and obviously there will be a variance in people's absolute hearing ability.  I think we forget in these audio forums that people are not created equally.

I agree with that but I disagree too.

I take as a fact that everyone will do better with training. so , everyone can improve even the less talented of us. then, you can't know if a guy is really talented or not before training.  Even the most talented sprinter will stay unknown if he don't work.

So for beginners in audio or anything else , it's important to focus on training. I don't believe that people are equally talented but I strongly believe that nobody should give up before trying.

I agree with that but I disagree too.

I take as a fact that everyone will do better with training. so , everyone can improve even the less talented of us. then, you can't know if a guy is really talented or not before training.  Even the most talented sprinter will stay unknown if he don't work.

So for beginners in audio or anything else , it's important to focus on training. I don't believe that people are equally talented but I strongly believe that nobody should give up before trying.

I also agree it can be trained, but was not focusing on the training aspect of it, just the ability.

Anetode, I kind of agree with Marv's assessment, but I would like to hear your take on it.

'tode doesn't believe in plankton. But he does believe in altered states, i.e. Anax, CT, Ravi, and I enter trances were we actually do hear plankton, but this plankton is not generated by the Yggy.

Have you described this plankton elsewhere, if not can you describe it here again?  I hear the word being thrown around but not sure what it is.

nevermind:
http://www.changstar.com/index.php/topic,1856.0.html
http://www.changstar.com/index.php/topic,593.0.html

I'd like to hear more from people who have some of the better DACs to compare with. That's the best way - no doubts about what the brain is or isn't getting used to. And which amp/headphones are being used.
The first few days impressions were those of a "technical DAC". I'd suggest to ask your friend again around 110-120 hours. For me, and someone else too, that was when I got some of the first good signs of what was about to come.

It's 1:15am and I should be sleeping but am clearly not. Not sure what the problem could be...

Well, if by better, you mean more expensive, Yggy completely blows away [sorry, hyperbole sounding...but its true!] the Audio Research Reference DAC that I've been using since December, in fact I have it up for sale.  And, FWIW, I thought the Ref DAC was better than a Linn Klimax DS/1 that I had before that.  Over time, I couldn't listen to the KDS any longer as I found it too revealing and fatiguing with the rest of my system...so I thought I'd give tubes a try and picked up the Ref DAC on AG. I found the Ref DAC to be a more enjoyable listen, but after comparing it to Yggy, there is so much information missing from the Ref DAC that it was like putting a blanket over my speakers.  I will say, though, that even though I got rid of the KDS, it was/is still the imaging champ of the DACs I've owned...it felt like you could reach out and grab the vocalists.

So in my experience, Yggy is the better DAC. I only wish Schiit had released this damn thing years ago, I would have saved a shitload of money!

There was a scheduled power outage in my building yesterday which ended the ~170 hour uptime of the Yggdrasil.  Upon returning home and taking a listen, it's FAR from terrible but I can confirm the magic does indeed go away if you turn it off for a couple hours.

I am re-taking notes as it does it's stabilization thing again; will post both sets of daily listening notes (original and after power off) after I feel that the sound is no longer changing.