I ve heard the LS 50 before ,my friend use Mark Levinson amp 100 w, audio research preamp, thetha dac and transport. They were able to handle all types of music we play on them, including classical, the room is very small.The better the gear you connect the better sound they give you, very capable speakers.
KEF ls50 meta’s are on the way
Got a demo today and ordered a pair. Should arrive next week. Will shootout with my current ls50s when they arrive. Stay tuned.