I have not owned any tube equipment, but this discussion reminded me of a video by Sean of zero fidelity (see below) that reviewed the Linear Tube Audio z10. It is said to combine the best of tubes and the best of solid state in one package. It is mostly a tube preamp that has a low-power amplifier thrown in. I don’t know what it sounds like, but getting an integrated amplifier with all of 11-12 wpc into 2 channels, for about $5,000 does not tempt me. I hear that wattage isn’t the be-all for such products, and Sean said the sound was very good with some low efficiency speakers (but better with high efficiency ones), but I still doubt that such low power could really be all that great at that price. Of course, I might be wrong.
https://youtu.be/i9QCY5QuuF8
https://youtu.be/i9QCY5QuuF8