maybe i shall have to do a third review on these cks70, but their recessed highs ruined the signature
I know, coming from the RE0's, that these are pretty unbalanced earphones. They aren't terrible, but in terms of instrument seperation, clarity, etc, they are no match for the RE0's. In fact the CKS70's remind me of better versions of my old sony EX-85's. I find it difficult to listen to them without EQing them quite drastically - cutting back some of the mid-bass, upping the mids, upping the highest treble ranges (while avoiding raising 6khz because of the noticeable sibilance.) I'm hoping what dweaver says about the mids/highs clearing up around 80hrs is true, because right now they are really obviously nowhere near as resolving as the RE0's at the other end of the scale.
However, the funny thing is, that these are really, terrifically enjoyable to listen to once you've played around with the EQ. The bass response all the way down to the bottom seems to give all my music a new sort of 'floor', giving everything from vocals to electronic beats a really full, dynamic sound. Cello's in particular were the big standout differences for me.
As others have noticed, they make my RE0's sound anaemic in comparison - even when they have been EQ'ed.
At this point I'm really wondering if I'm enjoying these a lot because it's a new novelty to actually have some bass, or because they are good. All I can say is that AT's sub-bass chamber configuration really delivers, in a way that is quite controlled and punchy. I wonder if AT coupled this design with some really high end dynamic drivers, and really engineered for a high end 'audiophile' grade IEM, what wonderful IEM they would produce. (And yes, the big bold "SOLID BASS" and "OVERWHELMING BASS" stickers on the CKS70 packaging is what suggests to me that the target market for these IEM's is not high end.)