Sony's new Signature audio series consists of a gold-plated NW-WM1Z Walkman, weighing in at 455g and costing $3,200, and a pair of MDR-Z1R closed-back headphones costing $2,300 and weighing 385g.  That's a lot of walkman to carry around, and at a combined weight of 840g, that's also a lot of weight in todays portable world.  

Check it out here.