Nothing from modi, i changed every wire and i tried an other headphone and computer. Anyways, schiit has been very kind with me for solving the problem, i have no problem right now, but this problem is weird.

No eq, no upsampling, nothing. 

Here something you should all know   If you are using audirvana with Yggy, don't use ''volume fixed by the dac'', it results in bad distortion because the volume in the software is too loud for some reason. Put it at -14-16db and everything is solved and you have a normal volume output with...

Actually, electronic sound really good with yggy, the burrito filter helps a lot for the ''soundstage of effects'' like in shpongle or infected mushroom and there is less harshness in some tracks.

You are right, and the warm up kinda stabilize after 1 week

I'm 7 days of burn-in, everything in my house sound so much better with se, did not try balanced though. I will do a more in depth review in a couple of days.

I know the a49 very well, it's a very good amp. Laid back with a nice tone, not bright but very controlled with the bass. Would recommend with bright speakers to complement. Don't know the others.

Not really useful except if you have bad usb problem

Same here

Don't worry guys, Yggy is pretty cold compare to amplifiers

The holes are blocked, for keeping internal temperature i guess 

Ok thanks! btw, you can tag songs to be played with phase inverted with audirvana.

  I didn't find a song that phase invert does a difference. Can you please give me the name of a few songs that works with it?

Just did a comparison, the differences are small, i think its smoother on audirvana. Could be my brain.

http://www.head-fi.org/t/752914/yggdrasil-a-p-review-two-days-of-paradise   This was with the prototype