Running Two TT into one phono input, best options?

I decided to play safe.

Fed both the 401 and the Avid with MC carts into the Goldnote PH-10 and bought a Vincent PHO-8 just for the Rega with mono Ortofon MM cart and feeding that into a single ended input on the amp.

All works well sweetly and in all honesty all TT now seem to be quieter at the speakers, quite considerably less background noise.
More than likely due to rerouting of cables while rearranging than anything else I think.

This was the reply from Decware on the changes to their box for low level tonearm inputs.

" Kevin, for tonearm applications we do not add the splitting resistors on the dual output jacks. Nothing internal but silver wire and silver switch."

For now I have decided to take option 3 from my short list and will be running the Rega mono table into its own simple MM phono and into a single ended input on my BAT.
Thanks to all for there help here

Lewm
I do not expect there to be a perfect solution I agree but was hoping for some opinions that might be workable.

So far I have three considerations.

1/ The Decware switch with low level tonearm inputs. Would like to hear a reply to my question to them about what they changed first but it does have a 30 day money back guarantee.
2/ A Denon AU-320 SUT. This is a unit I have owned and used in the past with great results, it has 2 inputs, 1 output and is switchable from 3ohm to 40ohm to straight pass through. I honestly did not notice any readily audible difference when I last used one.
3/ A fairly cheap MM only phono stage to run the Rega mono table into and remove one of the tape decks from my system thereby freeing up a single ended input. Then both the 401 and the Avid could run into the Goldnote PH-10 phono.

Chak
I can find plenty of line level input switchers but as I know and Teo points out it is those tiny little signals we are dealing with that are the problem and oh so easily degraded because such low levels.

And I do not want to be trying endless solutions rather get it right first time, hence this thread.
So far the only unit I have seen that specifically states for low level tonearm use is the Decware unit although as Solypsa says it would be interesting to know just what they changed to make it "low level" compliant.

I may just send them an email first.

Slaw
I did think about that but I also thought that was likely to be the worst solution for signal loss/hum.

But I guess it is worth a try for sure.

weh51nc
Sorry I should have been clearer, there are NO SPARE inputs left on my amp and I really want to use the present phono for all TT if possible.