There was a period where my listening setup used BruteFIR running filters generated by this DRC program. To my ear it sounded really good, especially managing some of the quirks having large speakers in a small space. It was sort of an anti-audiophile setup though, the only way to play anything on it was via AirPlay and everything but the speakers was pretty boring and hidden.
I love the 'boring and hidden' aspect. I used to have a huge stereo system. Nowadays I have a PC with a good sound card. It runs Kodi and is hooked up to two active speakers.
Everything my old rack would do has been replicated in software at state of the art quality with free software. Any old desktop PC is powerful enough.