Electronic balanced line level switch

HI all!

I've been googling but probably am using the wrong keywords because I can't find a single thing on what I'm looking for. I want to make a balanced line level signal switch that is electronically controlled, so something like an arduino is able to switch from one source to another. Anyone able to help me in the right direction?

Cheers!
 
You can use a 4PDT relay controlled via arduino instead of a switch.

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