I try to keep my gear searches local but there is this....
https://www.ebay.com/itm/JVC-SEA-80-10-channel-equalizer/142893258786?hash=item21451a1822:g:0bsAAOSw66NbZK6I&_nkw=jvc+sea-80&rt=nc
Or become a member and post in Barter Town as a "want to buy". Someone might have one sitting on a shelf.
Great. Thank you.