PigletsDad
My intelligence test came back negative.
Switching isn't ideal though is it? It makes the signal paths longer for a start which seems contrary to this design or am I missing something here? I'd suggest having plug in modules as the worst case scenario and if anyone has more than one turntable I'd suggest they have more than one phono stage.
I'm not keen on plug-in modules - you have even more crappy connectors in the signal path. Unlike a switch, you don't even get wiping action to the surfaces clean.
For the common case (one cartridge), everything can and should be directly wired.
As the switch is after the first stage, the signal levels are fairly reasonable, and so it is no worse, but no better, than the main source selector problem.
Multiple complete phono stages, by building an EQ stage for each path, is another option if people prefer to do things that way; it involves a lot of extra parts and is undoubtedly the millionaire's route.