Would You Rather Own A Good SET Amp, Or A Great Push Pull Amp?

Hello, this is an interesting discussion that is relevant to solid state designs too, of course. Speaking of that, and  bringing this discussion down to the level of physics and transmission of sound waves through air, what about this assertion from Nelson Pass:

https://www.passlabs.com/technical_article/single-ended-class-a/

Virtually all the amplifiers on the market are based on a push-pull symmetry model. The push-pull symmetry topology has no particular basis in nature. Is it valid to use air’s characteristic as a model for designing an amplifier? If you accept that all processing leaves its signature on the music, the answer is yes.

Enjoyed reading this thread.  Educational, many different points of view, civil discussion so lacking in other threads these days.  Well done!

The Pass read very interesting, never heard the analogy to air argument previously. .

My earliest references for audiophile sound quality was Audio Research with Maggies and Dahlquist DQ10, this and the Dynaco ST35 with Dynaco A25 at the other end of things. Being a complete novice, I'd listen and half believe the crap Stereo Review mag threw out, as did much of the audio audience. Problem was going through all this great measuring class a/b amps I never came close to achieving sound quality I heard with my references. Over time I migrated to my first class a ss amp, N.E.W. DCA66, this battery power, resembled Pass designs. Finally getting closer to my references, still no cigar. From here I finally decided to take the plunge back into tubes, Conrad Johnson MV55, sweet, golden glow tube sound, loved that romantic presentation for a few years, what vocals! And then we go on and on over the years with a variety of push pulls looking for something between the romance and the analytical. Fairly successful, and then I get the horns and SET, took some years to get it all exactly to my liking, never thought I'd go back to push pull, and then this new Bendix 6094 mono blocks, now reconsidering push pull although this will never wholly replace SET, will always maintain a 300B amongst the collection. Now considering adding a Type 50 tube SET to collection. A First Watt always a lure as well. I'm always mindful every watt counts and should be highest quality, far more difficult to produce vast number of quality watts vs a single or just a few. 12wpc may be my max.

I do love to romanticize about a sweet 300B, 2A3, or 845 amp, and I keep saying I'll end up with one.....but we'll see. I love my Aric Audio "Push Pull" EL34 amp, and will die with it.

For years I've have a Bob Latino Tubes4hifi ST-120 amp that can run in "triode" or "ultralinear" mode. It's a $2,000 amp including tubes, and I just don't give it enough credit; it's a little brilliant amp. It responds really really well to tube rolling too.

Virtually all the amplifiers on the market are based on a push-pull symmetry model. The push-pull symmetry topology has no particular basis in nature.

Vacuum tubes and transistors don't either. This is a red herring.

I don't normally disagree with Nelson, but in this case I do. 

If physics is a part of nature, then we have an access to see that indeed, push pull does have a basis in nature. Two men with a large saw can cut down trees a lot faster than a single person can. You can see that analogies can be used in ways to make any argument you want 

We've been selling OTLs for the last 49 years. They have one stage of gain so are simpler than an SET which might have 3 gain stages including the output. 

So you can see there are a lot of ways to twist the simplicity argument around too. 

The bottom line is regardless of the amplifier class of operation or topology, the result must be musical, so that amplifier will have a very good first Watt as well as the succeeding Watts.