Mosfets: The way to go for SS amplification?

If the Plasmatronics are the speakers I remember seeing, won't they set the tree on fire? Aren't these the speakers that needed a gas supply to run? Or was it that they emitted a gas from their plasma tweeters?
Happy Holidays

Cdc - the "current yield" is the transconductance I talk about in my post above. There are a few more details about it there. Arthur

I have owned both types and it depends on what kind of speaker's you match them with IMO.Bipolar's do a great job at delivering needed current,but with exotics ,like maggies I found Mosfets to be better.Maybe that's just my experience.

The MOSFFET Haze issue was answerd for me by Ralph ,the designer of Atma-Sphere Amps.Mosfets are more linear BTW and having an amp forward bias'd to run closer to Class A clears up the problem of the haze.It did in my case as I had my B&K modified and it sounds alot richer and clearer.An experience recently with Rotels top of the line reciever made me aware of how bad the haze can be or put another way how noticable it is after eliminating it from my setup.

There are several manf.'s that swear by using JFETs one of which I recently contacted. Sonogy!They claim that JFETs are more Linear.Not so sure about that.

All in all ,it matter's what you have for speaker's IMO and what serves them best.Found that out the hard way.Some speaker's will do great with certain amps then fall apart using other speaker's. There is no clear solution or golden rule ,but I bet measurement test would bear it out.Then you get into the testing equiptment use.

Frustrating thing about audio is there will always be a divergence of opinions,therefore trust your ears.