I'm brand new to the nice headphone world, and these CCA CRA IEM's are my first foray into in ears. I'm thoroughly impressed with them running through my Toppings stack (e30/l30). I don't see them being an over ear killer for me, the comfort and insane detail of the Sundaras still reigns supreme, but they're a really nice option to have around. They're a tiny bit bass heavy which muddies up the low end details, that would be my main criticism, but for $20 shipped including a set of memory foam tips, I have no regrets!