AKG C 747 CONDENSATORE DIREZIONALE AKG C747 More Than Just A Podium Conference Mic. First introduced in 1987 the AKG C747 was originally designed for ‘unobtrusive speech applications when mounted on a podium or lectern, or for teleconferencing activities’. From this somewhat uninspiring start, these days the C747 is widely acknowledged as one of the most versatile microphones AKG ever produced! Smooth frequency response from 30Hz -18kHz. Rapid transient response produced by tiny, low-mass, capsule. Tight hypercardioid polar pattern, giving excellent separation. SPL rating of 133db.