After more than 10 hours of burn out, the CIEM play as I supposed: bass strong and well controlled, low mid perfect, mid recessed and a little bit weak, high rich and airy. A bass oriented CIEM as I expected and I love it. Not very resolving but sufficiently detailed, ideal for RDM, Modern Jazz, RAP and Blues. I hope time will increase mid presence or I will try a silver cable. For now 4 star.