I should not be so hard on SET. I get it, it’s fun. But they are touted as being "simpler" and first off, that doesn’t mean anything good and second, that’s not always true.
The great fact is they have a high output impedance. And if they don’t, there will be an additional stage that adds feedback to lower the output impedance. That’s it, kids.
The EVO300 and 400 have push-pull triode, and if you go back to the early days of high-fidelity, that was always considered to be state of the art. Because of speaker control. It’s quieter.
In 1951, David Hafler and Herbert Keroes changed everything. It’s called Ultra-linear. The vast majority of tube amps since have used it, and PrimaLuna allows you to access both PP triode and Ultra-linear from your remote. And PP triode will work better than SE in every parameter.
Now I know....I get it. I see the photos on the Decware website, and I can get all gooey about it as much as anyone, but I’m also pragmatic.
As to the number of amps being sold: 20 years ago I was selling tons of 845’s and 300Bs. Demand dropped. Period.
That doesn’t mean it’s some big deal decline, it means it’s not like mozartfan says and he can make all the videos he wants but he may be causing more harm than good. We get the phone calls from lost newbies that assembled a system that if they were advised properly, they never would have put together.
I love SET. I love bridge SET even more. I love all of it. I love all this stuff. I’m speaking from experience after doing this for 44 years as a living, and making my own mistakes and discoveries. I’m speaking to the uninitiated and there are tons of them here.
EDIT: I got a long letter from a guy just recently that bought the wrong stuff, and how he can’t afford to change it now because of the financial loss it would mean. I hate that.
If you can afford to experiment do it. Have fun. I've had the luxury of trying it all. Audio is not just about measurements ONLY. If you have the jack to do it, why not.