[. . . ] HD 600 Avantgarde Headphones | Audiophile Headphones General Description The HD 600 Avantgarde are audiophile-quality, open dynamic hi-fi/professional stereo headphones. [. . . ] 12 ­ 39, 000 Hz (­10 dB/1 kHz) Transducer principle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . dynamic, open Frequency characteristic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . diffuse field equalised Nominal impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 Characteristic SPL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112 dB (at 1 kHz, 1 Vrms) Load rating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0. 2 W THD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0. 1 % Ear coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . circumaural Contact pressure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . approx. 2. 5 N Weight (without cable). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] 004465 Features Sophisticated design, elegantly finished in black and grey High-quality, open metal mesh earpiece covers for an extremely transparent sound Computer-optimised magnet systems minimise harmonic and intermodulation distortion Extremely lightweight aluminium voice coils ensure excellent transient response Neodymium ferrous magnet systems for optimum sensitivity and a wide dynamic range Exceptionally natural, spatial and accurate sound Detachable OFC copper cable, Kevlar-reinforced, with very low handling noise Diffuse Field Frequency Response Recommended Accessories HZR 62 stereo volume control Replacement Parts Ear pads (1 pair) Connection cable Adaptor (3. 5 mm jack to 1/4" jack) j j j j j j j j j j j Cat. [. . . ]