Best amp for Sonus Faber Amati Anniversario?

I had a pair or Amati's (original) & now have the Stradavari's.
The best (TUBE) sound I had with both were with VAC Ren. SIG. Mk. III 140'S amps paired with a VAC Ren. Sig. Mk. II pre. Probably the best sound ever in my system!
I now run the Strad's with Goldmund 29.4's paired with a Halcro DM 10 pre.
Electrocompient Nemo's were also quite satisfiying & extremely powerful with the Strad's & the VAC pre.

An amp with a lot of current! And I mean a lot!

If you want to enhance the rich tonal qualities of the speakers, I'd try tubes with sufficient power. However, as I did not have any tube amps on hand at the time I owned the SFAAs, I don't have a specific recommendation. I would imagine that Lamm ML1.1s or M1.2Rs would be quite good. If you wish for a bit more drive, pace and bass control, I'd consider the Boulder 1060. I would also consider Spectral gear - however, you'd need to commit to a preamp-amp plus MIT cables setup. I would imagine that Spectral, which has transparency and dynamics galore (without sound bright at all) would nicely mesh with the timbre the SFAAs produce.

As Paladin mentions, Goldmund would also work well but are hard to find new or used in the US.

Lamm no way, they run out of juice with my previous Annis.
TRy tube-preamp and good powerful solid state amp or CAT amps that really rock the Annis.

best made in heaven setup fo Anniversario and strad is Viva linea xp preamp and
CAT monoblocks, completing my previous input.