Alright here are my initial impressions. Please take note that this is not my final review.
Out of the box I was a bit disappointed. Although the signature sounded promising; there's veiling in the mid bass section. It also sounded a bit thin and cheap to my ears. Did a parametric EQ with Accudio app on IOS (-5db 150hz-250hz) and the veil disappeared. Sounds a lot more clearer now. Without the EQ it still sounded underwhelming.
After 10hrs burn-in:
The veil seems to have lifted and it now sounds more clearer. Veil is still there but not as noticeable as before. It no longer sound as thin/cheap; not sure if it was because of the burn in or just my imagination. Still EQ settings need to be applied for the best sound out of this. I wish I could say it sounds just as good w/o EQ.
BASS: Just a little bit boomy, good strong punch, fast decay (a bit too fast for my liking).
MIDS: Very nice! Just in the right place. One of the best sounding IEM in reproducing female vocals. A bit grainy in the lower mids but very refined and clear in the upper mids. Adds character to voices.
HIGHS: I love the sparkle. No sibilance at all. Maybe just a tiny bit more forward than the mids but it sounds perfect to me. Timbre is not as natural as i'd like. Decay is too short for Cymbals, lacks shimmer but it now sounds better prior to burn-in. So I'm guessing the timbre and decay will improve overtime.
SOUNDSTAGE: Average width at best. Sounds a bit congested at high listening volume.
IMAGING: Average; far from XBA3 capabilities. More 2D sounding to my ears.
I'll let this break-in for at least 100 hrs more. I reckon there will be changes. As of now, I'm okay with the Quadbeat 2 in terms of value but not overwhelmed just yet. I'll do a final review as soon as I'm confident its the best time for the QB2 to be reviewed.