Yes, apologies my terminology may not be entirely accurate. I thought Durac Live was the collective name applicable to all domestic software applications;
Dirac Live adds value to any sound system, be it an entry-level soundbar, a high-end home theater system, or a professional recording studio. To offer our business partners flexibility for licensing Dirac Live, we’ve developed three tiers.
— Ready: The system is prepared for Dirac Live Room Correction. Just purchase an end-user license to activate it.
— Limited bandwidth: The system can perform room correction up to 500 Hz, and the target curve can be tailored within this range. This correction is sufficient to deal with the bass and voice areas but not the entire audible spectrum. Upgrade Limited bandwidth to full bandwidth.
— Full bandwidth: This is the top tier of the room correction feature. It allows the system to be corrected across the entire frequency range while giving you full control of the target curve.
You can choose between the stereo and the multi-channel version if you purchase a Dirac Live Room Correction Suite license that runs on your PC.
And then to this add Bass management module. I think the AVRs you mention have limited range capability? If you want access to the full range and Bass management your options are more limited.
The AVR's I am talking about, starting at circa AU$1700 street price, have Dirac Live "Full Bandwidth" - they only have a single subwoofer channel, so multisub adjustments are out of the question, and DLBC (Bass Management) is limited to EQ and time alignment of the one Sub with the main speakers.
At the mass market price levels, the Denon AVR's have the lowest priced combination which supports multi-sub tuning using Audyssey.... but although better in the bass as a result, I have found the midrange to be noticeably better with Dirac - and for me, midrange comes first.