AKG K271 MKII Unboxing and Review,AKG K271 MKII Closed-back Studio and Live Headphones with Mute,K271 MKII,AKG K271 MKII Closed-back Studio and Live Headphones with Mute,Amazon.com: AKG Pro Audio K271 MKII Over-Ear, Closed-Back, Professional Studio Headphones : Musical Instruments