well, the headphones arrived and i unpacked them, quite easily. they look very nice professional, however, the frame does seem lightweight, and so if you stood on it would probably snap, so be extra careful. the wire is very long, this is not so good when using an mp3 (what i brought mine for) but perfect on a hi fi or a distant computer. Howver i sit close to my pc and the wire gets tangled up in the legs of the chair.
it comes with a 3.5mm to 6.3mm converter, for use with proper hi fis, i havent used it and so cant comment on it.
the sound quality is what you expect, good, for an average priced set of headphones. the bass is good, however the highs can only be heard when you turn up the volume.
the headphones dont have the problem where you knock the cable, and it makes a nosie that you can hear through the headphones, as described for the other senheiser earphones.
it does block out some noise, although not totally, tech specs:
Jack plug 3,5/6,3 mm stereo
Nominal impedance 32 Ohm
Weight w/o cable ca. 130 g
Transducer principle dynamic, closed
Ear coupling supraaural
Cable length 3 m
Frequency response (headphones) 18.....18000 Hz
Sound pressure level (SPL) 115 dB(SPL)
THD, total harmonic distortion <0,5 %
all in all well worth the money, fantastic!