Adam Studio Pro SP-5, Adam Studio Pro SP-5, Studio Headphones, Developed in collaboration with Ultrasone, S-Logic Plus technology, 40 mm Driver, Gold-plated, ULE Technology (magnetic shielding), Closed, Dynamic, Impedance: 70 Ohms, Transmission range: 8 - 38,000 Hz, Sensitivity: 95 dB, Weight: 290 g, Sturdy case, 3 m spiral cable (6.3 mm jack) and 1.2 m smooth cable (3.5 mm jack)