Congratulations on the Yggy. I also own one. The Yggy needs time to thermally stabilize (see your included manual), basically over the course of a week or so. Do not turn it off. If you think you like it now, you haven't heard anything yet. It will start to become spooky real by about the fourth day. I firmly remember noticing the DAC was almost two different personalities in one from days two to three, where you had the real Yggy beginning to emerge from the cold body of its initial self. The Yggy shines with just the music you seem to post here; it is a fantastic, reference-level DAC with real world instruments and voices. I have little doubt it pairs well with your Euforia. As for the HD800, it is an incredibly resolving and spacious, yet polarizing and picky headphone. It is arguably more technically superior to the T1, but you will find it will expose everything wrong with poorly mastered recordings. For those that you find do well with the HD800, be prepared to be absolutely blown away. On the right chain and with the right music, not even the Utopia has blown me away like the HD800 has. I would highly suggest contacting sorrodje for a very affordable physical mod to attenuate its peak at 6khz. The HD800S includes essentially the same thing, but it adds second-order distortion to the bass that the original HD800 does not have, making the original more accurate. If you need help securing this from sorrodje, PM me. It is an essential mod IMO. He is usually more than happy to hook people up. See Tyll's innerfidelity article on the HD800S for an official mention of sorrodje's mod.