[. . . ] [. . . ] They have a highly conductive OFC copper cable and can be connected to all personal stereos, CD players, DAT and MiniDisc recorders and hi- systems. Features--Bene ts · Open, supraural, dynamic hi- stereo headphones · Ideal for both hi- systems and portables · Very comfortable to wear due to ultra-lightweight design · Detailed sound reproduction with powerful bass · Duofol diaphragms to reduce standing waves for distortion-free sound · Detachable, single-sided connection cable · Replaceable parts for long life Technical Data Frequenc y res pons e Trans duc er princ iple Nominal impedanc e Charac teris tic S PL THD Ear c oupling Contac t pres s ure Weight (without c able) Connec tor Connec tion c able 17­22, 000 Hz dynamic , open 32 106 dB at 1 kHz, 1 V rms < 0. 3 % at 1 kHz s upraural approx. 9. 4 oz 1/8" s tereo mini jac k plug with adapter to 1/4" stereo jack plug 3 m, detac hable s ingle-s ided Optional Accessories S tereo volume control HZR 6 Sennheiser Electronic Corporation, 1 Enterprise Drive, Old Lyme, CT 06371 Telephone: 860-434-9190 · Fax: 860-434-1759 · Web: http://www. sennheiserusa. com Sennheiser Mexico: Av. Fax: (525) 639-9482 Sennheiser Canada: 221 Labrosse Ave, Pte-Claire, PQ H9R 1A3. Fax: 514-426-3953 Manufacturing Plant: Am Labor 1, 30900 Wedemark, Germany [. . . ] [. . . ]