Just a quick note. The above technical comments are a useful reminder of what the OP was really asking about. And there are many solid suggestions for fine products, too.
So, IMHO this becomes a question of value. Bang for the buck. "We know what we want. Now, where to get it at the best possible price."
Which brings me back to the Innersound Electrostatic amp. Or one of Roger Sanders fine amplifiers. Reviews of theses amplifiers consistently refer to their beautiful sound, rivaling in many ways the finest tube amplifiers, but with tremendous, prodigious, useful power. Hence, my ongoing praise of these products.
Of course you can also get very nice amplifiers with excellent performance like we are discussing if you are willing to spend a ton of money. Lots of money makes it easier to solve many problems. But as my mother used to say, "what's the fun in that?"