The Earthworks SR40 High Definition Microphones are a matched pair professional recording microphones, for pristine, uniform stereo recordings. Earthworks delivers their high-definition sound in a microphone intended for vocal and instrument capturing in professional recording and sound reinforcement applications. The SR40 features a near-perfect cardioid polar pattern and a frequency response of 30Hz to 40kHz. High definition goes beyond 20kHz to provide ultimate detail and fidelity. Its cardioid pickup pattern maintains a uniform frequency response throughout the spectrum, while effectively eliminating off-axis noise and ambiance. The SR40 provides high gain-before-feedback without “beaming” or “spotlighting” the subject audio.