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


What is the best solid state amplifier you have ever heard?
jozurr
My favorite of the ones I've heard would be from Herron Audio, an older model. I'm sure the latest is even better.
Well since I have swapped amps more than a few times in otherwise the same system. And I have also swapped some of the same amps through after other components have been changed through the years. I can tell you MY favorite amps have been but two: Threshold S300 II and Electron Kinetics Eagle 2C. Honorable mention PrimaLuna Prologue 6. 
No mention of Parasound in this thread surprises me. I run an HCA855 using only two of the channels and it is pretty spectacular. I know Parasound isn’t high up on the food chain but they make some very nice sounding amplifiers.