Some thoughts on the CKR7.
I've let these burn in for the past 3 or 4 days. They should be settled by now or getting close. The overall sound is kind of v-shaped but the midrange isn't necessarily recessed. The bass and treble sort of steals the show if you're into that type of sound. Bass is huge and packs a good amount of mid-bass punch. Thankfully these reach really deep into the sub-bass region. The bass has excellent control and tightness. Seems like the CKR series has well tuned bass. Treble is very sparkly and somewhat peaky. I hear sibilance with certain tracks and it's not so bad with others. I would say these aren't as bad as something like the CKN70's and about on par with the CKS1000's for similarities in treble. Bass really steals the show though. I don't think any previous AT earphones were this capable in the bass department. Vocals are somewhat recessed compared to the top and bottom of the frequencies. My impressions on the vocals could be skewed since I've been spoiled by earphones that do this very well as of late. The CKR10 for example does vocals very well and is forward. The somewhat recessed vocals and the occasional sibilance sort of ruins my overall assessment of this earphone. Staging is quite excellent also. Sound is wide and somewhat deep. Instrument separation is quite good but not on the CKR10 level. Build is top notch. Housing has more metal than plastic and feels substantial in the hands. Since I don't have any other AT earphones at the moment except the CKR10's, I can't directly compare but these remind me of the CKM1000's signature but possibly better refinement all around.
Some comparisons with the CKR10.
Bass - Very similar and I find the CKR10's bass spectacular. Differences - CKR10's pack a little more punch, better definition and more quantity
Treble - Big difference. CKR10's are so much more refined and extended without losing any resolution. Best AT treble by a long shot.
Vocals - CKR10's are more forward, good mix of thickness and airiness. CKR7's do not have the thickness and sounds recessed compared.
Staging - CKR7's are wide, CKR10's are wide, deep and has a surround effect. CKR7's actually sound small compared. With the CKR10's you can hear all the instruments and place them on the stage sitting about 10 rows back or more. CKR7's you are placed closer to the stage and everything is more in front of you. Definition of instruments are more clearly rendered with the CKR10's.