There are no real differences that are specifically Canadian aside from the CSA safety features you noted. The variants for the 'splitch' amps are:
50 or 100W (head or combo)
EL34 or 6550
transistor or IC switching
Those variations are not particular to any country aside from the 6550 versions being pretty much a US only thing.
Attached is the only schematic I'm aware of that shows any CSA items. It's for the 50W version with transistor switching.