The list I was looking at was this:
http://www.digitalfaq.com/forum/vide...ing-guide.html
Quote " The 7000-series has 2MB TBC RAM, 9000-series has 4MB and uses the Dynamic Drum system."
Maybe this is true for NTSC, but not for PAL and this is not mentioned anywhere.
I just have to sell it again, it didn't cost me more than 35euro and the condition is very good.
But it is really difficuelt to the hands on a good JVC SVHS VCR these days and I have a lot of VHS tapes I need to transfer. I used a HR-8500 with TBC and it was great, but the sound processor died on it. :-(