Well...well...well...,  what can i say about the legendary  beyerdynamic)))) DT990/600; that i bought from B&H a few months ago? How about... simply remarkable for the price/performance ratio. The  journey actually begins with my firstly acquired audiophile headphone(which was also a Beyerdynamic) but it was the variant DT880/250ohm model.  I thought the 880's were superb,detailed, and crisp all-rounders,but my experience with them for the first 2 months(before purchasing the 990's shortly after) was that they were some-what lacking in the bass...