The C568EB is an electret condenser design which operates on both pressure gradient and interference principles. Below 500 Hz it functions as a hypercardioid microphone; above 500 Hz the acoustic interference tube introduces increasing directivity. A switch selectable 12 dB/octave 150 Hz roll-off filter effectively suppresses rumble and wind noise. Robust, all-metal housing contains the built-in preamp/impedance converter. The C568EB is an ideal microphone for theater, sound reinforcement, and film/video recording.