AKG K-701
AKG K 701 high-end reference headphones - revolutionary flat wire voice coil technology, dynamic, open back, impedance 62 Ohms, efficiency 105dB, frequency range 10Hz-39.8kHz, max. input power 200mW, hard gold plated 1/4" jack plug, 3m cable. Weight: 235g (not including cable)Â