Professional Studio Reference Headphones. With a self-adjusting headband for a secure, natural fit, the SR850s provide total comfort for extended studio sessions. Samson's SR850 Professional Studio Reference Headphones offer an outstanding listening solution for musicians, sound engineers and general music enthusiasts alike. With solid bass response, ultra-clear highs and on open-ear design, the SR850s ensure complete comfort and accurate headphone monitoring. Features include:; Professional studio reference headphones; Open ear design for maximum isolation; 50mm drivers for exceptional reproduction and wide dynamic range; 10Hz-30kHz frequency response; 32 ohms impedance; Self-adjusting headband for a secure, comfortable fit; 1/8-inch to 1/4-inch gold-plated adapter included