The professional-quality Sony Pro MDR-7506 Headphones let you hear it all. Premium 40mm drivers reproduce every musical nuance. Closed-ear design gives a tight bass response, practically eliminates external noise, and snuggles over the ears for hours of comfort. Frequency response is a flat 10Hz to 20kHz so you accurately hear what's on tape. Gold-plated connectors prevent rust and corrosion, and a UniMatch plug is provided for both 1/4" and 1/8" jacks. Phones fold for easy storage. We recommend the MDR-7506 for applications where hearing accuracy is crucial. Includes soft case.