Sony’s latest snake oil: Pricey ‘Premium Sound’ Micro SDXC cards

Need the perfect expandable storage solution for your $1,200 Walkman? Sony might have a bridge to sell you. The company is now selling a 64 GB Micro SDXC card “for Premium Sound” in Japan. At $160, it’s four or five times more expensive than a typical 64 GB card, but as the Wall Street