[. . . ] The MX 400 RC are fitted with a short, asymmetrical connection cable for plugging them into the remote control of portable players. Cat. [. . . ] 18 ­ 20, 000 Hz (­10dB/1 kHz) Transducer principle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . dynamic, open Nominal impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Max. 125 dB at 1 kHz, 1 Vrms THD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . < 1 % Ear coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . intra-aural Weight (without cable). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125 dB at 1 kHz, 1 Vrms THD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . < 1 % Ear coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . intra-aural Weight (without cable). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 g Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3. 5 mm jack plug Connection cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . approx. 1 m, OFC copper cable Features Wide dynamic range Excellent bass response Dual-sided highly conductive OFC copper cable Can be connected directly to personal stereos, CD players, DAT recorders and hi-fi systems Earphones come with a practical case with an automatic cord take-up mechanism Additional volume control (MX 51 only) Colours: MX 400/MX 400 RC black and silver MX 51: blue metallic Replacement Parts Ear pads (1 pair) j j j j j j j j MX 400 RC Cat. [. . . ] 1 m, OFC copper cable Features Wide dynamic range Excellent bass response Dual-sided highly conductive OFC copper cable Can be connected directly to personal stereos, CD players, DAT recorders and hi-fi systems Earphones come with a practical case with an automatic cord take-up mechanism Additional volume control (MX 51 only) Colours: MX 400/MX 400 RC black and silver MX 51: blue metallic Replacement Parts Ear pads (1 pair) j j j j j j j j MX 400 RC Cat. [. . . ]