What is the best solid state amplifier you have ever heard?


What is the best solid state amplifier you have ever heard?
jozurr
@ptss what spectral amp did you hear?
The two best I have heard in no particular order are:
Nagra Classic
Linnenberg Liszt 

For me, it was the Pass Labs XA-25; this is the one that made me finally move away from my 300b SET monoblocks!
Naim Statement NAP S1 monoblock amps + Naim Statement NAC S1 linestage preamp driving the Focal Utopia Grande or the Magico M6 speakers. 
D'Agostino Relentless & Momentum M400 monoblock amps driving some big Wilson Alexx or Wham.
Audio Research Reference 750 SE vacuum tube monoblock amps (2 pairs) driving (big-amped) Sonus Faber Aida ll speakers.
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