DIRAC

Dirac Live® is an advanced room correction technology developed by Dirac Research. As the most advanced room correction technology available on the market, Dirac Live helps listeners to correct for one of the weakest components in the audio chain: the listening room. Dirac Live not only corrects the frequency response, but also the impulse response of the loudspeakers in a room, yielding improved imaging and timbre, better clarity, tighter bass, and less early reflections, as well as reduced resonances and room modes. The market leader in room correction, this sophisticated algorithm is used in high-end AVRs, in luxury car sound systems from companies such as Rolls Royce, BMW, and Bentley, as well as in thousands of high-end digital cinema theaters across the world.

Dirac Live® is available for select Denon and Marantz devices, a list of which we publish below.
Dirac Live® is a paid software extension available directly from its manufacturer in downloadable form.

https://www.dirac.com/live/marantz
https://www.dirac.com/live/denon