This is for Georgehifi especially but others can chime in.

We're talking current delivery, and BJT's (bi-polars) will do current better than mosfets can.
Ask the current amp kings EG: Krell, Gryphon ect why they use BJT's, and they don't have problems with thermal runway, because they are good designers, and don't get it, even with the massive Class-A bias they have.

Your done.  

MOSFET amps that will deliver massive current all day long.

Of course they can, but the same done with BJT's (Bi-Polars)  will do even more, you clearly need to do some homework on this, as your not as knowledgeable as you think you are. I don't bully, it's fact.

Cheers George

kosst, don't waste your energy arguing. Your opponent is a self proclaimed know all and expert in all fields related to audio and electronics, all without having even built one. He even puts Ralph (Atma-Sphere) who's been designing top shelf gear for decades on notice.  Just move on...

I just can’t stand seeing BS put up, and have to give the truth. There is no such thing as an amp that can double it’s wattage the way he quoted. And if you believe Mosfets can do current better than BJT’s then your just as bad.

As far as Ralph he great and we agree on many things, except for his instance on Zero auto transformers being a fix without any negatives, which they are far from, and are just a bandaid fix for a problem of not having the right amp for a given speaker.

Cheers George