Got it last Wed, I think the burn-in time not reached 100 hrs yet. Just a quick note on the hiss as I see some of you concern. Hope help (rarely voice out here....
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I don't have some really sensitive earphone here, just tested a few: CA Vega 2020, UM Mest, Sony JustEar M2, Sony IER-Z1R. No hiss here, at least not noticeable to me even in high gain. Unfortunately my T8ie already dead long ago as real hiss tester.
For the sound part, I think more professional people here would be more precise comment.
It's really clean, no color added. You'll got more color from you ear gears instead. So... I'm really love it with I put high gain with the Vega. Powerful enough to show the texture of base, clear enough to let the high shine. Good enough for me as a daily carry.
However, what I don't like on it is the software.... a bit buggy here, thou, I think it's just me who is really bug sensitive, and basically I'm always a bug finder.