I know this is sacrilegious in audio circles but I decided to put a MiniDSP between my source and pre-amp in my desktop nearfield listing rig. It makes a huge difference, like not subtle it’s huge! You can easily A/B it by disabling Dirac on the MiniDSP. If you have anything that can do Dirac room correction you owe it to yourself to just give it a try. You will need a calibrated mic, mic stand and and about an hour to run the software and place the mic around the room.