The Sony MDR-CD900ST offer a walloping studio quality sound at less than half a pound. Yes, they looked like the headphones you had in the 80s. But these are the real deal, if you're in the studio trying to throw down some of your own tracks. And after all, they were the few decent songs out of the 80s. These are designed and manufactured by label Sony Music Entertainment Japan (not Sony Electronics). The earcup is also fully reversible so that you can listen with only one ear.Specifications: closed dynamic, 5-30,000Hz, 63 Ohms, 1,000mw input, 2.5m cable, 200g.