HEDD HEDDphone Two; studio headphones; open design; over-ear design with Air Motion Transformer driver (electrodynamic transducer) and Variable Velocity Transformation (VVT); Frequency Response: 10Hz - 40kHz; max. SPL: 89dB @ 1mW; Impedance: 41Ohm; adjustable headband (height, width, bend and clamping pressure); head and ear pads made of faux leather; Kevlar-infused cable (braided); incl. 2.2m cable (6.3mm jack), 2.2m cable (4.4mm jack), 3-pin audio adapter (6.3mm to 3.5mm jack), 4-pin audio adapter (4.4mm jack to 4-pin XLR, balanced), transport case, set of ear pads; made of materials such as carbon fiber and magnesium for low weight; weight: 550g