Sony Professional MDR-7506 Sound Monitor Headphones Preowned like in new condition, used only twice. The MDR-7506 is a large diaphragm foldable headphone designed for professional studio and live/broadcast applications. Remote Audio MDR-7506 Features 40mm Driver Unit - For clear, high quality sound reproduction Closed-Ear Design - Comfort and reduction of external noise interference Folding Construction - Compactness in storage Stereo Unimatch Plug - 1/4" and 1/8" applications Gold Connectors and OFC Cord - Reliable and stable signal connection and transmission Supplied Soft Case - Protective storage Key Features 40mm Driver Unit - For clear, high quality sound reproduction Closed-Ear Design - Comfort and reduction of external noise interference Folding Construction - Compactness in storage Stereo Unimatch Plug - 1/4" and 1/8" applications Supplied Soft Case - Protective storage. See pictures as part of description.