For most systems including Dirac, ARC Genesis, MCACC, YAPO, Audyssey, Mini DSP, and others, the Advanced Audio calibration utilizes the equalization and bass management capabilities included in most late model receivers or processors to give a startling improvement over non tweaked, automatic routines. REW, along with a microphone individually calibrated by Cross Spectrum Labs, is used to measure and analyze each speaker. Multiple listener locations can be spatially averaged. The system will be equalized to a "house curve", with a specific high frequency rolloff and slightly elevated bass; and this can be modified to suit individual preferences.
The Audyssey Pro calibration is available for higher end legacy Denon/Marantz, Onkyo/Integra, Audyssey, and NAD components through 2016. It takes Audyssey to a much higher level, unlocking more processing power in the process and using a higher grade, individually calibrated microphone. In addition, it offers critical tweaks and flexibility not available in the standard Audyssey calibration, even the XT32 version. If you have an Audyssey Installer ready component, this will give you the most detailed and accurate calibration available. If your system is not Audyssey Pro capable (some XT32 receivers are not), then the Advanced Audio calibration below will give the best results. The calibration cost includes the Audyssey licensing fee of $150.
When you just want to know the basics are done right, the Basic Audio setup will get things on the right track.
Average time is 3-5 hours for Audyssey Pro, 4-7 hours for Advanced Audio, 1-2 hours for Basic audio.