I've had the C3s for 2 weeks now. The rt iem has a slight fit issue.
Andre does have good customer service. He spent a long time on the phone to ascertain the fit issue and is refunding the shipping for me to send them in.
The sq is much more to the SE530 side than triple -fi.
If you like the 530 there is a chance you will like the C2 or C3.
There is more bass than I need in the C3 and the C2 might be the better choice. A bit of eq takes care of that.
No hiss issues straght from an Itouch or 160gb classic. No issues with a move or Ibasso D3.
I got the C3s with live search , disc. of 109
Total, 256.00.
I will also use these when I play noisy gigs so they are a good solution for musicians.
These isolate about as well as my SE530s but not as well as my Ety4s
