I don't own a Mark VII but I keep wondering about the VII mode. Is it a dud mode like the Mark IV's R2 channel (which honestly would be fine, as the IIB, Crunch, IIC+ and IV modes are all completely brilliant and easily worth buying the amp for) or is there some hidden sound in there that would blow the doors off the place?
When I've played that mode, it has seemed like it sits somewhere between a Mark and Recto character. I wonder what kind of pre-EQ'ing you'd have to do to get it as tight as a boosted Recto. Because if you could get there, then you'd also have the graphic EQ to play with after that which could get really nuts.
But from looking at the tube layout and what tube stages serve which channel, you can tell that the VII mode is basically the Crunch mode but with one more gain stage placed in the middle of the circuit.
So I wonder if the VII mode was just the result of Mesa thinking "well we have this extra unused gain stage, what if we just shoved it in the middle of the Crunch circuit and see what happens" without really thinking too much beyond that, and it ultimately turns out to just be a kind of worthless dud channel that doesn't really sound good under any circumstances because although it has a ton of gain, it's just kind of gain for gain's sake that wasn't really tuned to be all that great.
Either way I'd love to get more time with one to find out for sure. The channel might have some potential but I haven't personally found it yet is all I'm saying.