IE 900 (Student)

Absolutely stunning from the word go, no need to burn in, very open, superb clarity, huge soundstage, very balanced yet some V-shaped dynamics with excellent tonal separation, but without shrill timbre on the highs, and fabulous bass and subbass. The 4.4 gave a much broader and higher volume output.

Excellent, comparable to my over the ears 800S, which is a classic standard for audiophile listening.