The PCC170 SW is a rofessional boundary layer microphone with supercardioid polar pattern to minimize background noise and feedback. The microphone is designed for use on boardroom tables or lecterns. The PCC-170SW has a bass-tilt switch, allowing the user to tailor the low-end response and reduce subsonic noise. The included RFI suppression ensures trouble-free operation even with active cell phones nearby.The PCC170 SW has a silent-operating programmable membrane switch that can be configured for touch on/off, momentary on or momentary off Features Supercardioid polar pattern offers high gain before feedback PCC® (Phase Coherent Cardioid®) technology for optimum speech intelligibility Three-position bass-tilt switch for optimized suppression of subsonic noise Silent-operating on/off switch to reduce the number of simultaneously open mics