Building the Audio Note Kit 1 SET amp...

Rebbi,
With the De Capo the AN Kit el34 push pull is most likely a better match. You'd need to compare that to your amp with a suitable speaker and listen. IMO 300b offers superior sound quality vs an el 34 tube.

I wonder how OTL tube amps like Atmasphere for example would do with the Decapos.

One thing about tube amps for sure is that I do not think I have ever heard two that sounded exactly the same, even with the same architecture.

Interesting thread Here on the topic of OTL and push/pull.

In rebbi's case I think he has to keep the SET and find teh right speakers. After all, he built the amp. Its his personal creation.

The Refs are nice but you can always buy a new pair of good speakers.

Then again this amp is famous by now. You might be able to sell it for a profit to help finance the next phase! :^)

The right SS amp in the right total system can indeed sound very much
like a good SET amp system. It it the complete combination. The amp is but
one piece.

I love tube amps of all types and find the great ones deliver sound that is
beautiful and "SET" like regardless of wether they are or are not
SET or DHT amps. In fact, I would argue the sound variance is just as wide
between the multitude of DHT SET amps out there.

Many designs and combinations of designs with carefully matched gear
can deliver that engaging SET type sound. This can be learned by
experience and trying lots of gear. No shortcuts. Some of us have been
there and learned that.

I am confident Rebbi can indeed experience the same type of sound he is
now enjoying with a well chosen more powerful amp and perhaps preamp.