OK amp12 just came. Impressions with the xelento out of the box:
- its dead flat- nothing pops out, no strange peaks which happend sometimes with the amp11 mkII;
- no shouty vocals on Tidal via UAPP;
- crystal clear with a bit of warmth, very pleasurable sound sig;
- very precise, great imaging;
- HOLOGRAPHY!! - soundstage depth is amazing, 3D like;
- BETTER BASS! Not so soft and floating, more precise. Better textures, almost as deep out of the box;
- overall def more polished sound, seems more mature for me at least.
The only con in comparison with amp11 mkII is the soundstage width. Its quite wide but not as spread.
Amp 11 mkII played more with width, didnt have such depth, was more fun sounding.
Amp 12 is more refined, very holographic, not as wide.
For me amp12 with soundstage width of amp11 mkII would be an end game.
Hoping that with burning in process stage will widen but honestly I dont believe. Lets see.