My first impressions of these are rather positive. Very transparent sounding iem, with textured timbre and balanced emphasis on treble, this give a spacious sound with above average imaging and instrument separation. Bass is on the thin side, but still lively and well define, mid bass is where the roundness and kick happen. Sound is very detailed especially on top, mids have some upper mids emphasis, no serious sibilance to be find but vocal are a little too brightish-thinnish to my taste. In fact, all energy came from snappy highs, wich have better attack than low and mids. Its not a thick sounding iem, but a well done delicate and transparent one. Construction is okay, but not mindblowing, especially the plastic mic that have a cheapish feel. Need more listening (and eartips swapping), but these have a mature tuning wich is not far from being perfectly neutral. Not bad at All.