The original 2035 style remotes for the Beomaster 8000 were standard.
The 2035 + remote board for the Beomaster 6000 '80s were optional.
That basically explains why its more easy to find the 2035 than the Beomastar 8000 terminal on its own.
I had my 8000 remote long before I found the Beomaster 8000 which turned out to have the remote missing.
The difference is basically a few more radio channels and TP2 acess. Volume is just up and down but you can adjust left and right speakers.
Keep looking on ebay as they do turn up. If you se either of the two grab 'em.
Both will work.
Again there is the very rare MCL kit so you can use a Beolink 1000. There was just one on Ebay a short while ago.
The 2035 and Beolab does work great though so there is no need for anything else when it comes for the remote question.