Yea I've had the V281 for a few months now, and it's basically neutral with a slight liquid overall tone to it. There was never any burn in, or change to the sound in all these months, and it handled every headphone perfectly. Even without being able to try different dacs I still feel like I'm listening to the dac rather than the amp, pretty cool how it does that. Also no glare or anything like that, unless the song/sound files had it in them/the headphones are prone to it. I think in general the V281 just reminds me of sound is heard naturally, like the way it would sound to you if you heard it live, but not like a concert, like if you were in a room where musicians were playing (Ignoring soundstage). Meaning it sounds the way your ears would interpret it if you weren't listening to a recording, whether its electric guitar through an amp, or acoustic drums, or even EDM before it gets mastered and compressed, music and audio in general don't really sound warm or analytical or neutral in real life, it sounds like whatever the instrument or source of the sound makes it sound like, but our ears will tend to hear it with a high degree of detail, and slight liquid/organic tone, regardless of the instrument. So for an amp to be able to get out of the way like this, is something I really value highly, because I play drums and have played in heavy bands, and a lot of the time I find that amps and headphones and dacs just don't do a great job or recreating what those sounds really sound like if you were in the room they were being made.
Most audio reproduction gear will make it sound warm, neutral, or bright, and everything in between. but those aren't very good ways to recreate sound, instead those do make for great ways to please someone who wants to hear sound in a certain way, which is fine, dont get me wrong, but I'm just saying the V281 is recreating sounds, in my opinion, the most proper way sound should be recreated. It's hard for me to find good descriptive words to explain this, because its not really neutral, or organic, or liquid, or whatever, it just....correct, to what I'm familiar with in real instruments or music creation sources.
I also experience a similar thing with the Alpha Primes going balanced through the V281.
And I'm just using a schiit bifrost uber as the dac to achieve all this.