- The professional digital HP-30 headphones from Pyramid will provide you with the exceptional sound quality of those expensive studio headphones at an affordable price. - The HP-30 stereo headphones feature 2.25 inch dynamic speaker elements with high efficiency stronium magnets. - Equiped with a convenienient stereo/mono selector switch and independent left/right volume control. - Closed-air cushioned earpiece and adjustable reinforced head band provide maximum comfort. Features: Single Side Coil Cord, 6' Long Frequency Response: 20Hz-18kHz Sensitivity: 105dB @ 1kHz Impedance: 32 Ohms Nominal 1/8" (3.5mm) Mini Plug with 1/4" (6.3mm) Plug Adaptor |