The headsets in this series dispose of a dynamic headphone transducer with a frequency response of 10 – 30,000 Hz and excellent isolation from ambient noise. The single cable is detachable, the ear cushions are replaceable. The pivoting gooseneck microphone- boom design, can be swivelled to work on the left or right side of the headset, or set to the upper position when not in use.    NEW - Improvement of immunity against RFI (Radio Frequency Interference) caused by GSM, DECT, UMTS, Tetra etc.    Good ambient noise attenuation    High-quality condenser cardioid microphone for improved bass response and high gain-before-feedback    Very high speech reproduction quality and excellent intelligibility    NEW - Flexible, pivotable gooseneck for optimal positioning with elastical microphone suspension    Lightweight, low profile design    Single-sided, detachable cable    NEW - Limiter (Optional)    Powerful neodymium headphone system for excellent reproduction accuracy    Optimised frequency response according to IRT (Institute for Radiotechnology in Munich) regulations    Balanced sound impression    Closed headphone    Circumaural ear pads, advanced ear cushion system    Adjustable, soft padded headband    Service-friendly construction due to exchangeablitity of all parts    Single-ear-version: DT 287   technical data Transmission type Wired Headphone design (operating principle) Closed Headphone impedance 80 ohms Headphone frequency response 10 - 30.000 Hz Nominal sound pressure level 100 dB SPL Polar pattern for microphone Cardioid Transducer type for microphone Condenser - Cardioid Construction Circumaural (around the ear) Cable & plug Detachable cable – various connectors available Net weight without packaging 276 g