AK... active capsules are part of the variable miniature microphone system. Together with the KM 100 output stage AK... active capsules form a complete microphone. AK 30 and KM 100, for example, make up the KM 130.
The AK 43 is a pressure gradient transducer with wide-angle cardioid characteristic. Attenuation: 4 dB at 90°, 8 dB at 135°, and 11 dB at 180°. The frequency response for sound sources within an angle of ± 90° (off axis) is parallel up to 12 kHz.
Studio Quality Sound Experience From Elegant and Understated Design Denon’s Music Maniac™ AH-C50MABK In-Ear Headphones feature 9mm drivers professionally tuned to a Flat EQ to deliver an acoustically transparent music experience. The AH-C50MABK In-Ear Headphones also feature an in-line 1-button remote and microphone for easy control of select Android and Apple devices and other smartphones*, as well as clear phone conversations and voice recognition operations.