As a large part of the 4006A omnidirectional condenser microphone, the MMP-A houses all the components to make sure the signal is passed in the best possible condition. An ultra-transparent transformerless preamplifier with active drive for impedance balancing.
Combine with MMC4006 to create a 4006A microphone. Other capsules to consider in the 4000 series include MMC4011 cardioid, MMC4015 wide cardioid, and MMC4017 shotgun. You may also use this preamp to match with the new twin diaphragm 2000 series, at a lower cost, including MMC2006 omni and MMC2011 cardioid capsules.