Others have beaten me to it about Accuphase being bright and brittle, did you try adjusting the tone controls to see if any better for you?
Between Luxman and Naim amps, I'd always expect the former to be more what you're looking for.
In my experience, I've always found Naim sources to be forward.
Good luck with your search.
Between Luxman and Naim amps, I'd always expect the former to be more what you're looking for.
In my experience, I've always found Naim sources to be forward.
Good luck with your search.