This is a quick review and there is nothing much to say about this obsolete headphone much. I'm not a huge fan of on-ear designs much, but this thing is very comfortable, has very small clamping force, but ears will start to heat up due to garbage bag earpad covers. build quality is nothing spectacular either, very cheap plastic headbands, non tangible cable is a welcome addition.   Here comes the bad news, these things are build for very amateur bassheads. Despite the thundering  boosted low end, bass is very boomy, very uncontrolled, bleeds in to...

Updated review:  5/28/15     Build Quality: Great build quality. Overall solid professional looking open back headphone. Cable is strong and thick, non detachable cable isn’t/wasn't a big deal breaker for me, still compared to 7xx series, 612 uses lesser quality materials (plastic, leather headband) and can gradually loose the elasticity of the auto adjusting headband mechanism over time. Btw I have first batch of Austrian made 612pros, so I can't speak much for the build quality of Chinese built variants.     Comfort: I’d say pretty...