is there a compability matrice available if I want to add a third device to PLA5456 pair?

JeromeMas

is there a compability matrice available  if I want to add a third device to PLA5456 pair? where can I purchase on device and not a pair?

Pixel

I didn't find any place that only sold one PLA5456. However, you can go to ebay or Amazon to search, maybe you can find someone sells that.