Treble looks fine, its a bit reduced from the DQ6 (and uses a different driver). Sub-bass is probably lacking to me, what worries me is that early bass-shelf. It starts at the lower mids, so note-weight might be affected by it.
Most first impressions seem good despite the graph. But first reviewers have been very quick, and have different taste than you. It will be interesting to have your impressions and thorough review.
I might get mine in the coming days, and am still in discovery mode for different signatures and driver types so I am very curious.
The bass into the mids look kinda not great… but for the $20 or so I spent it will at least be different then any other IEM I have. It also doesn’t look quite as bad as the GK10 in that respect either.
In the past, CCA usually hada more balanced tuning, while KZ was the V-shaped ones. Other than KZ fans, CCA was the more popular one I believe (remember the KZ ZS10 Pro and the CCA C10?).