Thanks for the reply. Kind of a bummer.
My Mark V spends a lot of time right next to my Allen Encore (Vibrolux-based) and/or my Trinity 18 (Marshall clone). So it's really, really easy to use an A-B pedal to go back and forth to learn how to be able to dial in BF Fender tones or old style Marshall tones on the Mark V. The controls and modes of the Mark V cover a lot of ground!
I used to have the notion that the Mark V was a terrible pedal platform and I should basically view it as a great 3 channel beast with a nice effects loop for delay or modulation. But that was because I typically dialed my clean channel a certain way to make it less pedal friendly... but didn't know it! Or at least not pedal friendly in the same way as the Encore. But once I did an A-B comparison, I realized that those EQ controls are powerful and I could get it darn close to the basic flavor of the Blackface circuit.
Ditto being able to do the same for the 18 watt, FWIW.
But since I don't have a Hiwatt at my disposal, I'm unable to go back and forth and figure out which of the three clean modes is the best starting point for getting it Hiwatt-ish. Although I kind of figure the basic Clean is the way to go - most headroom and all. I hoped for some pointers. But I guess there are a few things hidden here. BF Fender = basically mid scoop. Marshall = basically upper mid bump. Hiwatt should be somewhat flat. I suppose I'll just use my ears and go for the flattest response I can get, given the Mark V's control set.
And yes, I know that no Mark V can ever do the ridiculous headroom and massive power thing that a real DR103 does. It's kind of a fire breathing beast. But I was looking for the best basic tone settings to feed that Muff, boost and Electric Mistress, plus delay!