That won't generate any controversy
That's a question which has been bouncing around for quite a while now, and the answer is not obvious. Both are wonderful headphones.
I've got a new DAC (Denafrips Pontus -- arrived last Thursday) and a preamp coming today (Emotiva XSP-1). That will let me A/B the two cans, mixing and matching DAC/amp combos with the two sets of headphones. I plan to spend a couple weeks doing that, to come up with my favorite pairings.
My current thinking is (factors weighted 1 - 5, with 1 being the least significant noticeable difference, and 5 being a deal-breaking difference):
- Utopia best with DAPs, especially paired with Cowon Plenue 2, because it's more sensitive/easier to drive +1
- Utopia has most detail +1
- Utopia has most precise soundscape +1
- Utopia is a little more comfortable +1
- Auteur is significantly less fatiguing +2
- Auteur has preferred tonality -- Utopia (to my ears) emphasizes some high frequency information a bit much +2
- As a consequence of the above, Auteur has
slightly preferred bass +1
- Auteur is acceptable with Opus#2 -- haven't heard it with my P2, since it's off in Korea getting a sloppy 2.5mm jack repaired -1 (subject to revision when/if my P2 comes back)
- Auteur comfort isn't an issue, just a bit heavy, with
slightly too little clamping -1
- Soundstages are similar in size
Obviously, all this is
to my ears, on my system.
I really wonder if I'm going to notice significant differences in dynamics/impact when A/B comparing the two. Also, will the difference in detail become more or less noticeable? I haven't really been able to get a good sense of the differences in these characteristics yet, but I suspect the differences will become clearer once I can do a quick switch between the two headphones.
I know it seems silly to worry about performance with DAPs -- neither of these sets go outside. But I do some portable listening around the house (while doing chores, watching sports on TV with the sound off...)
My expectation bias is that I will prefer the Pontus with the Utopia, and the Sonica with the Auteur. I have no clear expectation regarding preferred amp pairing between my Violectric v280 and Bryston BHA-1 although I won't be surprised if I prefer the Utopia with the Bryston.
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All that said, the succinct answer to your inquiry is the old 'Magic 8-ball' standby:
Reply hazy try again
Cheers!