Output stage ?!

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Hi,
If my schematic is using a 5 pair MOSFET output stage, do I have to implement them on the same PCB as the IS and the VAS or can it be placed on a separate PCB?
The reason why is that I would like to construct and test the IS & VAS stage first and then go to an OPS design on PCB and I am also still hesitating on the type of topology ... Source Follower? Complementary? Other?
I know that noise figures and RF pick up is a risk while wiring from one pcb to another ...

But what are your opinions?

Thnx
 
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