Hifi sound is best when low distortion, effortless and dynamic. I experienced this as hoped in my larger room with larger speakers in particular when moved to 500w/ch Class D amps, but power and current hungry smaller monitors (more limited output in comparison) benefited similarly as well.
When I sold hifi back in 1978 (Tech Hifi), we had amps from 15 to 120w/ch available for comparison from many of the top lines of the day in a decent sized showroom.
Guess what? With any kind of decent speaker, the 120 w/ch model in a line always sounded best. Assuming realistic levels and dynamics matter. If not, or room is small, then not such a big deal.
When I sold hifi back in 1978 (Tech Hifi), we had amps from 15 to 120w/ch available for comparison from many of the top lines of the day in a decent sized showroom.
Guess what? With any kind of decent speaker, the 120 w/ch model in a line always sounded best. Assuming realistic levels and dynamics matter. If not, or room is small, then not such a big deal.