Hello Colin. Welcome to AOS.
I'm looking forward to what you may have to show us or tell us.
There are certainly Jordan users here and I'm sure they'll be interested too.
I remember buying a pair of Jordan Watts modules directly from the Hayes works in the seventies. They were tweaked and tuned in front of me by a friendly elderly gentleman who showed me how all the component parts went together. The setting up of the beryllium copper spring rear cone suspension was clever. Done with the back end of a small paintbrush poked through the foam dust barriers as I recall. Used no doubt because it was non-magnetic.
It is impossible for anything digital to sound analogue, because it isn't analogue!