The PRM1 is a special type of condenser microphone that provides an accurate reproduction of a room's sound characteristics for use with audio-analysis tools such as real-time analyzers (RTAs) and spectrographs. It has an omnidirectional polar pattern and exhibits linear frequency response between 20 Hz and 20 kHz, so it won't color the sound. With this mic and PreSonus VSL software with Smaart® Measurement Technology, PreSonus StudioLive digital mixer owners can have a powerful and affordable audio-analysis and correction system.