The K240DF follows the criteria specified by the Institute of Radio Technology (IRT) in Munich for a "diffuse field" equalization curve that provides headphone listeners with the sound pattern, characteristic of a room with reflective, non-anechoic surfaces. Each K240DF is rigorously tested to assure strict adherence to the IRT standards for frequency response, channel separation, and sensitivity. Hand-selected and matched components are used to maintain extremely close tolerances. The K240DF is a particularly appropriate choice if a producer or engineer must use headphones when mixing or adding signal processing on material that will be heard later through loudspeakers. Self-adjusting headband and circumaural (around the ear) pads ensure long term wearing comfort without fatigue.

Specifications Type: Semi-open, Circumaural Frequency Range: 15Hz to 20kHz Sensitivity: 88dB/mW Rated Impedance: 600 ohm Weight: 240g (8.5 oz.)