Quote Originally Posted by DiveDeepDog View Post
Talk to Flashback cables, I'm sure he'd make you a custom Y cable with din and phono's split. They're my 'go to' recommendation for Naim/Avondale cables.
Agreed, they are my 'go to' supplier for Quad cables, when I can't be bothered to make up my own. They are very helpful and friendly and always willing to consider customised versions.

I would check with Naim that the unit will work satisfactorily when loaded by three amplifiers (the impedance of all three will appear in parallel), otherwise a selector box is your only option.