Thanks for the update(s)! I'm not surprised that the CK6 didn't impress since they're a rather old product. The phones were released in Japan in late 2006 and were discontinued in that country sometime in 2008. One Japanese reviewer stated that he felt the CK6s were worth about $30 but not the $45 or so he paid for them. Its spiritual successors are the CKS line, at least in the sense that they're among the bassier AT canalphones. As for the J-Jays: Well, at least now I know that Jays products are available from Amazon. Hooray!