I bought this headphone last year from a fellow head-fier. Unfortunately one of the channels recently died. I suspect this is a cable issue as it was recabled by the first owner. Eventhough at that time I was already looking for a better closed headphone to replace them, I must say I will regret the CD900ST. This is a very capable headphone for the money.   As a studio tool you know what to expect, and the CD900ST does deliver a very well balanced and smooth sound. Unlike many headphones they don't have forward midbass, upper mids or treble. The...