@cdc I took the opposite journey to your good self; I started off with the qualities you're looking for, but wanted more "polite".
I re-started my HiFi life after 20+ years with Naim, which is where I ended my first hifi journey. Didn't really enjoy the presentation as I once did when younger.
Switched to Atoll, the IN200 Signature another linked for you. This is a very energetic amp; definitely NOT polite 😊, although I see you don't need the 120w output. In that case, maybe look up Atoll's smaller sibling to the IN200; IN80. I've not heard this Atoll model myself, but The British Audiophile has reviewed the IN80 also and enjoyed it.
As I say, I've taken the opposite journey to you. I wanted a more polite, less in your face, balls to the wall presentation of the Atoll IN200, and ended up with a Marantz Model 30. Hope this gives some context.
Good luck with your search 👍