I picked up the CK7 about 4 months ago as i had been looking for a multi patterned mic that would keep up with and sound at least as good as
the sE2200a in a similar price range. i initially looked at the sEZ3300a as we have one at work and i've always liked it but always found it a bit sharp on my voice and on some female vocals (although it is definitely a step up from the 2200a). i'd heard the avantone CV12 but it was double my budget but had
a listen to the CK6 and CK7 and thought "they sound good, and the price is right, why not!?". long story short the CK7 blows the alot of mics in the same price range out of the water imo! much smoother, much fuller, thicker mids, just awesome! it's much less hyped than the 2200a or
the NT1a and, in my use, it's the first mic i've tried that really works on
my voice. I used it in a session on a female
vocalist (it was a follow up session and the previous session had been a nightmare trying to find a mic that suited her voice) and seeing as i'd only had the thing a week i thought i'd give it ago. i really liked it, she loved it!
On acoustic guitars it gives a very natural and real sound, especially in omni, which works really well on folky tracks or in sparse mixes, although it doesn't cut through a dense mix in the same way as an SDC or even an NT1a. i set it up as the side in a M/S with an sE2200a and it sounded really crisp and full. i then tried it as the mid in a M/S with an Apex 205 as it blew my mind (this is now my go to acoustic guitar mic setup on tracks where the acoustic guitar is the bulk of the sound)
tried it on a bass amp and was very impressed, especially in fig.8. gave a very warm, thick bass sound. again, great on tracks that need that kind of sound (imagine those 60's bass sounds) but maybe not a rock or pop "bright" bass sound.
on a room mic for drums it gave a very clean and balanced drum sound with a nice balance of highs and lows. as a "treated" room mic, high and low passed and slammed into a comp, it gives that really nice pumping snare sound and brings out the attack in the toms really well.
i've not tried it on an electric guitar amp as i'm not a fan of LDC's on amps but i can imagine it'd sound pretty solid.
in one word, i find the CK7 to sound "Classy". excellent on vocals, great on acoustic guitars, and a good all round LDC