Best High Current amplifiers stable into low impedances

@jjss49 

Yes. Goes back to the seemingly silly assertion that the heavier the amp, the better it sounds (well actually all audiophile equipment). You need huge power supplies to   Supply current. 
 

After college I was an electrical / mechanical engineer for a while. I welded… low voltage and 5 amps. My first Threshold amp 3.5 amps. Then I got my second top of the line amp A Pass x350. The same amperage as a welder! That is power.

Accuphase A-75 - Class A amplifier.  It is stable down to 1 ohm.  See below:

You would better off if you get a class A amp, the class A/b amps don’t always have enough heat sinking to drive a 2ohm load at higher volumes for extended periods. 

....or you could get a properly designed speaker.

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?"