Sony MDR-7506 Closed-back, wired, 10 Hz to 20 kHz studio monitor headphones, suitable for studio recording and mixing, 63 Ohms, lightweight and foldable design (227 g), including case, black (orig.: Sony MDR-7506 Cuffie monitor da studio chiuse, con filo, da 10 Hz a 20 kHz, adatte per la registrazi