@bruxesq I've not used a MiniDSP but I believe you could put one in between your receiver and Parasound amp. It will digitize the incoming analog signal from your pre-outs, perform DIRAC processing to correct the room issues, then spit out an analog signal to your Parasound. That will give you room correction for your stereo speakers. I have heard Dirac can bring great results but have never tried it myself. Personally I have experience with RoomPerfect since I own a Lyngdorf amp, and it brings very, very positive results.
As far as physical room treatments, they are a 100% no go, not only from my wife but also from me. I don't want panels all over my living space. Instead, we have two bookshelves loaded with books, which I have intentionally staggered their depths and therefore created both a diffuser and absorber, since the soft books help absorb some sound and the harder ones at various depths/angles help deflect it. Something like that might be a living room friendly option for you. Either way, I still say room correction software is the way you want to go.
As far as physical room treatments, they are a 100% no go, not only from my wife but also from me. I don't want panels all over my living space. Instead, we have two bookshelves loaded with books, which I have intentionally staggered their depths and therefore created both a diffuser and absorber, since the soft books help absorb some sound and the harder ones at various depths/angles help deflect it. Something like that might be a living room friendly option for you. Either way, I still say room correction software is the way you want to go.