IK Multimedia ARC 2 - Advanced Room Correction system, room measurement kit with software and microphone. reduce significant problems between room acoustics and monitoring system. Mic capsule frequency response: 20Hz-16kHz, calibrated frequency response when used with ARC: 16Hz-20kHz (+/-1.5dB), mic requires +48V phantom power. System measurement software: automatic multi-point room measurement system (based on Audyssey MultEQ XT32 technology). Measurement precision when used with ARC system microphone: (+/-1.5dB). Requires: 48kHz operation (only for measurements). Requires ASIO audio hardware or CoreAudio, saves measurements sets to be opened on the ARC system correction plug-in, graphic frequency response display, Supports VST/AU/RTAS, for PC/MAC. Attention - No Moneyback when Software was opened!