Earthworks Matched Pair SR30 Hypercardiod microphones have a unique patented near-perfect polar pattern, which deliver a remarkably uniformed sound across the front hemisphere resulting in a flatter response at 90 degrees than most microphones are on-axis. With an extended frequency response to 30kHz, the SR30 delivers transparent sound quality and offer high rejection of sound from the rear of the microphone illuminating leakage and increasing gain before feedback issues arise.