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

SS Amp, credo "Do No Harm"

For me, the only justification for SS is the need for power, invisible/inaudible power. To drive inefficient speakers you simply love to volume levels you must occasionally have.

Best SS I have Owned, in my system for years, was McIntosh MC2250. Driving JSE Infinite Slope Model 2’s. Mine tested accurate to 305 wpc at lab day at Harvey’s the day I picked it up. A dead quiet beast, absolutely no idea it was on.

Went back to my super efficient horn speakers, No distracting meters, on low shelf, adjacent to alternate 30/35wpc tube mono-blocks. Everybody chose tubes over SS when I swapped back and forth.

Memory Lane Once Again

1967, my new Fisher 200T Transistor Receiver, It was "Transistors to the Rescue" then. I was 18 and in college.

I went from a suitcase portable: flip down turntable with detaching speakers I took from my brother to my first decent system with wedding present money.

Point is, I could NEVER experience such a leap up in sound quality as that so it is the transistor amp I remember most. 

I just sold my transistor McIntosh MC2250, and ordered a Cayin A88T tube integrated, it is on the way. Sold my transistor C28 Preamp, zeroing in on a tube preamp now.

IF you can find efficient speakers you love, it opens up the world of lower power amps, transistor or tubes.