I went to such a small pasta restaurant somewhere in the Gunma Prefecture's countryside. Record player, vacuum tube amplifier, jazz.
I'm down the rabbit hole of trying to find it now. Searching, in Japanese, for restaurants specifically in the Gunma country side that feature jazz, I found instead something else: "Cafe Front Load":
https://blog.goo.ne.jp/azuminojv/e/bbfb2695ee73ee9c27c2e4ba6...
Not the same one. But there is a record player with jazz.
The amp is not tube, but it is exotic for the purpose: a Yamaha PC2002M PA thing that requires 3U racks space.
These jazz vinyl -> record player -> exotic amp -> speakers type restaurants seem to be like mushrooms under the rain in Japan or something?
It may be like trying to find a replacement record needle in a haystack.