Andy Evans wrote:

Well, make your mind up! Either valve circuits have changed or they haven't.

That's a hybrid circuit not a tube one.

It's my experience that "hybrid" amplifiers have both tube and ss
amplification stages, not ss current sinks, active loads etc. It would
be deviating from common practice to call a circuit where the
amplification stages were all tube a "hybrid" circuit, although clearly
as you say the technology is hybrid.

Thank you. It is indeed a 'hybrid' and nothing wrong with that at all !

Graham