Mr. Carter has a very good email list btw if anyone else is interested.
https://roncarterjazz.com/pages/join-us-get-exclusive-access-to-ron-discounts-and-more
There is some good 834p Chinese clone info over on Hoffman to sort/post.
https://forums.stevehoffman.tv/threads/ear-843p-the-best-mm-only-phono-stage-ever.1158942/page-5