Please note this DRC will not apply to the SPDIF input, I will do another video on how to apply DRC to the SPDIF input in the future.
Also, note this process only looks at the basics, there are more advanced features and functions that were not discussed, I may do a video in the future to look at these items.
Before doing room correction ensure everything else is already set up like room treatment, speaker positioning, and so forth.
This process can also be used for any other Volumio devices.
Room EQ Wizzard (REW): http://www.roomeqwizard.com/
Harmon Room Curve: https://tinyurl.com/harmon-room-curve