I'll change something here in what you're saying. It's not really the vinyl that sounds good but rather the phonograph that does the reproduction
But I suppose it might depend on the freshness of the vinyl as well. We know worn vinyl doesn't sound too good.
The only amp I've ever seen that can replicate tube sound was the BOSS katana.and a crate amp i have. I considered buying a katana but hey i own at least 9 incredible tube amps that are awesome, I don't need something that merely replicates that.
- SMBDragon
It's really all in the mastering stages. If a recording is well mastered it should sound good regardless of the format...to an extent. But you are partially correct, it's not 'just' the vinyl that makes music sound great it's the whole analog process from beginning to end. Vinyl just does a better job than digital bring that information to the speakers. Pressings can be better nowadays too with heavier versions of vinyl that hold more information eg. 120g 160g 180g and even 200 gram version now.
But like you said you do need a good turntable and cartridge to get that info from the vinyl to the speakers properly. It's a process. The better the TT and Cartridge are, the more information is transferred through the preamp/amp so on so forth.
Solid State amps are so good now there is no need to 'replicate' tube sound. just trying to be true to the artist and recording quality. If you heard some of the modern high end Solid State amps you would be blown away. And it's not brand specific. many companies are building quality components nowadays.
But there are tube 'purists' out there and I get it believe me I do lol. But the vast array of accurate products out there in the industry nowadays there is no need to go all tube in the audio world unless it's a complete personal preference for sound...which many have.