A microphone package that includes a CMC 6 U amplifier and MK 4 cardioid capsule   The chief task of a CMC microphone amplifier is to convert the extremely high-impedance signal from the capsule to a very low-impedance one suitable for transmission through a microphone cable. It features a symmetrical class-A output stage with neither coupling condensers nor an output transformer. This design helps it to achieve extremely low distortion and light physical weight, while its very low output impedance helps make it insensitive to electrical interference. The CMC 6 works with both 12 V and 48 V phantom powering so long as the relevant standard is followed. In addition to the CMC 6's dual-voltage circuitry, the two amplifiers differ in their response at the very bottom of the audio frequency range. The CMC 6 is essentially flat to 20 Hz.   the MK 4 provides a classic cardioid pickup pattern, which makes it suitable for a wide range of recording applications. The MK 4's flat frequency response makes it a very versatile performer, and the audio captured is free of coloration, whether it's picked up from the front or the sides. Adventurous engineers might want to try the MK 4 as a vocal mic - you might just be surprised at the results.