The D440 is a unidirectional dynamic microphone. It has been designed primarily for tough onstage use on drums, guitar amps, wind instruments etc. and uses a patented AKG Varimotion diaphragm. The D440 has a cardioid polar response. This means the microphone is most sensitive to sound arriving from in front of it, less sensitive to sound arriving from the sides, and hardly responds to sound from the rear. This pickup pattern is virtually the same for all frequencies ("frequency independent").
- :