I own the shp2500, I had two as a matter of fact, and both snapped on the headband, threw away the first one, glued the second one cause I dont want to throw it away... so buikd quality is sucks, and the cable is freakin long, about 6 meters...
soundwise, there is some quality in it actually, the sound from the mid range upwards is rather smooth and enjoyable.. very easy to listen to, treble rolled off a bit early resulting in a pleasant highs. the problem is around the midbass area, where it lacks of control.. somewhat loose and muffled and it affects the mids a bit, it makes the mid sounds recessed. low /sub Bass is just ok, not bassheavy.. overall, it has the potential to be a pleasant easy listening headphone if not for the midbass rumbles...
its around $30 right? get some superluxes or panasonic instead, imo
cheers,