Continuously-variable polar pattern condenser boundary microphone is designed to resist interference from devices such as cell phones and two-way communication devices. Integral 80Hz, 12dB/octave high-pass filter removes unwanted low-frequency energy to improve intelligibility. All metal body and shock absorbing rubber bottom make for easy placement on almost any surface. When placed on hard surface, 901VP will take advantage of “boundary effect” signal-to-noise ratio increase. It is terminated with TA3M-type connector recessed in body of microphone. It comes with 30ft [9.1m] of detachable microphone cable that is terminated with standard 3-pin XLRM-type connector.