The S3s are a difficult load. For a relatively cheap amp I'd try the Schiit Tyr mono blocks. They have a huge power supply for the money using chokes(which produce super smooth current) needed for the large current draw for the S3 load. Power supply cost money and doesn't show up in specs. One of the things you get in costly amps is huge power supply because they can afford it. But even six figure amps don't use chokes and perhaps they should.
Best amplification for Magico S3 newer version on your experience
I purchased a pair of S3 but now I am facing that I might not have the funds for top brands amplification that I see them pairing at shows CH, Solution, D'agostino
Etc.
I come over here looking for advice.
Currently using Luxman 509x. My room is 18x12 and I listen to low to moderate vol.
Thank you in advance.