Sennheiser MKH50-P48

The super-cardioid MKH 50 offers a higher attenuation of diffuse-field and lateral sound than the cardioid microphone. It is principally designed for use as a soloist’s or spot microphone for applications requiring a high degree of side-borne sound muting and feedback rejection.  The directional characteristics are frequency-independent.

The sophisticated MKH Series microphones incorporate Sennheiser technology into condenser mics of superlative quality. Used by recording studios, film and television production companies, and broadcast professionals all over, the MKH line provides a flexible array of polar patterns and sizes, all optimized for totally transparent, "colorless" sound reproduction.  RF condenser microphones constitute a unique, sophisticated class of condenser microphones. They fulfil the very highest demands made on sound quality and versatility, and are renowned for their high quality, highly accurate sound reproduction, ruggedness, all-weather operation, wide frequency response and extremely low inherent self-noise.  RF condenser microphones use a comparatively low RF voltage, generated by a low-noise oscillator. 
It is modulated by the capacitance changes produced by the sound waves moving the capsule diaphragm.  As bipolar transistors produce less random noise than FETs, electrical equalization technology can be included to increase the microphone’s dynamic range and linearise its frequency response. As a result, an excellent low frequency response can be achieved even with small capsules.  In addition, small capsules achieve a considerably better high frequency response than large capsules.  A further advantage of this process is that an ungrounded audio frequency signal is available although the capsule is grounded. This is why all RF condenser microphones possess a genuine fully floating, balanced output without having to use an audio frequency transformer.  48-Volt phantom power is required.