I have a problem with my headphones. I have Sennheiser 660 (my favourites), Sennheiser HD, Audio-Technica ATH-MSR7GM, Klipsch X10, CCA C16 and various BT in-ear headphones. This is really very good sound for headphones in this price range. They are comparable to the too bass-heavy ZS10 Pro. The C12 sounded cleaner than the ZS10 and had a flatter sound curve. Still effective and clear bass, soft mids and shimmering highs, but not tiring. Nothing seemed unusual and it's a pleasure to listen to him. These are the best IEMs I've heard in this price range. Compared to the more expensive CCA C16s, the C12s have slightly more impressive bass, but the C16's soundstage is more open and a bit cleaner. I also tried the AS16s, they were too bright and there was no bass until you cranked up some volume. The AS16 isolates slightly better and the soundstage was wider than the C12 or C16 (the difference between the instruments was unrealistic), but the tonal coloration was too bright. Overall, I'm very happy with the CCA C-12. I switch between them and the CCA C16 fairly regularly. Both are comfortable to listen to and easy to listen to throughout the day.
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