If you pull the chassis I think Geroge put trim pots on that boost circuit that you can adjust either the amount of boost and corner frequency like flat. 800hz 1000hz. It was either one of those, maybe he went with a flat boost but I think you can adjust the Gain/DB of the boost. It's be awhile since reading about the FET boost George added.
Again....If I didn't already have a 68 build, modded 72SL and my 792203 I would have a Metroplex for sure. Because I am all Marshall all the time....... well except for my old Randall RG100ES's.
