Question about AER Compact version 2

[Mr Blues]

I have just purchased a used AER compact version 2.
I noticed the layout wasn't the usual compact 2 layout with the 4 lights in the effects section by the master volume.
Does anyone know if there were 2 versions of the compact 2 . The layout of this one is the same as the version 3 without the 4 lights.
Hope that's not too confusing . Lol