I'll say that keeping the CJs is a very specific choice. A separate analog amp means a lot of other components are necessary for the system to work. Almost like not downsizing at all.
To be clear, the question didn’t assume one had to be downsizing. It’s just about which one piece of gear one finds most valuable for any reason, and would keep and use with whatever new system they rebuilt.
Would you ever consider being a modern technophile and getting all-in-one actives? No need even for a separate interface.
I disagree with the characterization about not being a “modern” technophile - in my system I use a Bluesound streamer, benchmark DAC and preamp, and my speakers are quite up-to-date.
Unless you mean a technophile is one who insists on all in one actives.
In terms of whether I would ever consider an all in one active “yes and no.” Yes in the sense that I’ve always been open to whatever option sounds best to me, and if that were an all in one, I would choose that.
But “no” in that at this point it’s not what I would look for and from my long experience it’s unlikely to satisfy me, and I have found my own path to satisfaction.
If I was advising a newbie I would say the most important item to focus on would be the speakers, as well as the room and the set up.
It would not be to focus on amplifiers, because especially if you’re going to use solid state you can find plenty of sufficient neutral amplifiers.
And I’ve had plenty of experience showing that between an amplifier and a speaker, the speaker is where you’re going to get most of the character. Whenever I audition loud loudspeakers I insist on solid state amplification, because I want to hear the character of the speakers themselves and not possible character from interaction with a tube amplifier.
So intellectually, I have something of a “speakers first” bias.
But experientially, I’ve found my CJs to be enormously important to my full enjoyment of every system I’ve had. In terms of what I’m looking for they always nudge the sound into what I find to be almost perfection in terms of the sense of organic, rich, textured, easeful quality that draws me in and allows me to listen endlessly without fatigue or boredom.
And I would really miss the aesthetics and conceptual satisfaction in owning those old tube amplifiers - something that a bunch of wires and transistors hidden away in a speaker or whatever simply wouldn’t satisfy.
I do like something of a “bespoke” quality to putting together a sound system, in which my own tastes play a part, rather than the more anonymous character many here seem to seek.