Bought these headphones as drum and bass headphones. I am familiar with CCA having been using C10 for some time now. There isn't much of a difference between the two, but the low end is fuller and more focused on the 12, and the overall tonal range is more defined. To my ears they are a bit more comfortable than the 10s. So far I haven't had any issues with the durability or the sound and am very happy with the purchase. For musicians, I have recommended the CCA headphones for budget-conscious IEMs. They do a very good job and don't break the bank. I replaced the tips with foam and the soundproofing is very respectable. This allows me to keep the headphone volume down but still hear everything I need to hear well. Even playing the drums.
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