Pros: Great soundstage, deep bass and punchy, crisp and intimate treble. Cheap.
Cons: Require damping mod atleast for the high treble. Need sturdier ear pads.
Without mods it's quite decent headphone but after modding it becomes very good. High priority is to get treble down atleast. I have been using cotton wool pad and three layer of thin active carbon filter paper to reduce treble. And bass needs also little dampering too. I have been using one cotton wool pad inside each cup to reduce bass and making it more punchier. Build quality is not super. I'ts plastic and quite easy to broke but also easy to repair. Also it's very cheap headphone so no big deal if it's get broken :) Also it's comfortable headphone, lightweight, gentle clamping.