Thanks for all further replies. It all helps.
Graham. I've 're-purposed' a powerline adapter I was using to try to overcome a TV audio Sync issue. (That has disappeared on installation of a better TV) That adapter is now available close to my hi-fi set up, so AIUI, no need for a wi-fi connection between router (Virgin Hub 3) and Innuos .. I think. The unbranded fifty quid tablet I'm planning to use for control, has no difficulty connecting to the router from anywhere in the house.. though it does have a habit of losing the connection randomly and as I said above... can always be dismissed if it fails to keep its end up.. as it were.
I'm still confused about a few things (at least).
1.The Innuos quick start guide says to use 'Orange Squeeze' for remote control with Android. I've looked at that and it's a paid app. An indication of where I'm up to with all this tech is that I had to google 'How to pay for an app'... I'm now trying to find out what, if anything is left of my PayPal a/c..but failing that it's a card payment.
2. I can presumably use 'Orange Squeeze' on my phone too.. and I suppose on my 'smart' TV. I assume I only purchase it once?
As an aside, I have a Logitech Squeezebox currently unused. I don't know that I can see any obvious use for it in this context.. but am open to ideas. That's for later though. Maybe a little bedroom system?
Once I get set up I can see what differences I can detect between the Innuos' own DAC, and my Benchmark.
Onwards an upwards!!