Sennheiser HD-380 Pro Studio Headphone - dynamic, closed, circumaural, 54ohms impedance, 110dB SPL, 8Hz-27kHz, one-sided coiled cable (1-3m) with 3.5mm stereo mini-jack, folding/swivelling shells, high sound absorption (32dB), screw-on 1/4" jack adapter. Weight: 220g