I use them for in-ear headphones and am quite happy with the sound of the CCA C12. They are way better than the Sony I've used. I bought a redesigned cable (mainly for the adjustment bead to make it easier to store) and a set of foam inserts. My only complaint is that they are not very comfortable in my right ear. The left one is fine, so it's probably just a difference in how it fits my right ear. I still prefer them over the Sony and others I've tried.
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