Is it something other than standard 8 pin DIN?

https://smile.amazon.com/Oiyagai-Connectors-Black-Plastic-Handle/dp/B07DWSPTBG

Edit: the 14 year old forum post describes it as such in the filename for the image attachment in this post:

https://audiokarma.org/forums/index.php?threads/really-obscure-question-here-yamaha-wired-remotes.198727/#post-2326562