Based on our Custom Reverb Signature amp, the John Mayer Signature amp is 100 watt, single channel amp with incredible depth, bandwidth, and soundstage.
No, it's a Custom Reverb Sig with mods to his preferences AFAIK
here is TRs description.
can you get pretty close tones with the studio pro?
You bet, at lower volumes the Studio Pro can be EQ'd to get very similar tones, but as Greg mentions above the Studio Pro runs out of headroom real fast compared to the Mayer, which with single coils will stay clean all the way until the Master is dimed.
That's good news. So you prob can't keep up w a drummer while staying clean eh?
With single coils its tough, at drummer level it will get a good amount of hair on the notes, but that's surely not a bad thing and it's a great low gain grind. With humbuckers you would definitely not be clean with a heavy handed drummer. That's with me using the Studio Pro 35, haven't tried the new Studio Pro 50 or 100, which would definitely remedy that.
It slays any clean Two Rock clip that I've ever heard for that big clean Strat sound.
For the price of a Two Rock I'd probably buy a vintage Fender or two and call it a day.
No doubt Kimock, you have wayyyy more Two-Rock experience than I do! For Mayer stuff they cannot be beat. I just never really bonded with the Dumble type cleans as much as the Fender clean sound. I'm a huge EJ fan so Fender Twin is the clean sound in my head. I can see where those sweet Two Rock mids would make them sound bigger and cut through a mix better. I run a pair of Twins in stereo so that's like, what, 160-200w of pure clean tone! I'd still love to own a CRS someday though. My only point is there are legions of guys doing the Mayer/SRV thing very well with good ole "cheap" Fenders!