I have an Atom in my office and while I don’t think Atom will have any issue driving LS50 I decided against LS50 as I think they are little to big for desk speaker. In the end I purchased Totem Rainmakers. Lots of people mentioned Neat Iota and ProAc Tablette 10 etc.
Few posts across the forum on Atom speaker options in case you want to consider other options.
Most recent here…
Saying all this I was told LS50W Meta have a feature in app for nearfield listening. In any way they are fabulous speakers at that price range.
Personally I would go Atom as that also gives you one system to deal with and allows multi room playback rather then managing two systems and apps etc. Also I think better resale value if and when time comes.