Highly consistent cardioid polar pattern * Ultra-thin, 2.5 micron, 24 karat gold-layered, low mass Mylar diaphragm for superior transient response * Class A, discrete, transformer less preamplifier for transparency, extremely fast transient response, no crossover distortion, and minimal harmonic and intermodulation distortion * Premium electronic components, including gold-plated internal and external connectors * Subsonic filter eliminates low frequency rumble (less than 17 Hz) caused by mechanical vibration