I do have an amp that will perform better in a bad room than 99% of the amps out there, its a Martin Logan amp (a speaker company I know) and its called the Forte. Martin Logans parent company is Anthem. It is selling for 60% off right now at $249. It includes ARC room correction and has a built in streamer AND a sub out. If you position the sub and the speakers well and then run ARC it is probably going to sound better than a $$$$ amp in the same room and I guarantee it will measure better. BTW OP, I actually own this amp and have listened to it since that is the topic of this thread:
https://www.martinlogan.com/en/product/forte
Don’t take my word for its chops, here is a review. I use this amp to power my passive rear surround speakers and from the first time I turned it on I was amazed that an amp this inexpensive and small made these speakers sound that good. It also has an RCA in so you can hook up a CDP or a TT:
Review:
"a small affordable unit that is almost too good to be true."
https://hometheaterhifi.com/reviews/amplifier/power-amplifier/martinlogan-forte-amp-review/