hure KSM44A Multi-Pattern Condenser Microphone - Large Diaphragm Side-Address Mic with Subsonic Filter, Prethos Advanced Preamplifier Technology and 3 Polar Patterns for Great Recording Flexibility.
features: 
Prethos Advanced Preamplifier Technology: Class A, discrete, transformerless preamplifier provides transparency, extremely fast transient response and no crossover distortion. Minimizes harmonic and intermodulation distortions.
Groundbreaking specifications: 4dB of self-noise and max SPL of 131 dB for a total dynamic range of 127 dB – an increase of 7 dB that defines the new standard for cleanly nuanced audio capture
Multiple polar patterns–cardioid, omnidirectional and bidirectional–for maximum flexibility in a wide variety of recording applications
Dual 1 inch, externally biased, ultra-thin, 2.5 μm, 24 Karat gold-layered, low mass diaphragms provide superior frequency response
Premium electronic components and gold-plated internal and external connectors
Subsonic filter eliminates rumble from mechanical vibration below 17 Hz.
Switchable 15 dB pad for handling extremely high sound pressure levels (SPLs)