Presonus PRM1, Precision Reference Microphone, 1/4" pre-polarized electret-condenser capsule, recommended for use with PreSonus Virtual StudioLive software with Smaart Measurement Technology and PreSonus StudioLive 24.4.2 and StudioLive 16.4.2 digital mixers, omnidirectional polar pattern, up to 132 dB SPL, linear ("flat") frequency response between 20 Hz and 20 kHz, incl. clip, foam windscreen, and hard case