yes and no-
the advantage of having 'studio" amps is that you are (or should be) familiar with them, have the sweet spot dialed in for mic placement(s), whereas folks bring in amps, your in adapt mode... and I had a few players come in with amps that have problems (bad tubes, grounding issues, and one guy with a blown speaker (he thought it sounded cool...)
so having great mics, pre-amps, and plugs won't necessarily help improve a piece-o-crap piece-o-gear...
I'm not sure you'll find a single amp to do everything.... the modeling amps would be close... and that is a ,matter i=of taste as to whether the sounds are completely convincing.
In a studio you do not need high powered amps (IMO)
I have ta Blues Jr with the Celestion speaker, a Mesa 440 (combo, 4x10, similar to a Fender deluxe reverb... with a lot more gain), a fender tweed champ clone (5 watts), and a black face Fender Bassman... i can pretty much cover the spectrum with these (and a few pedals), so the Ampeg should work well for most things (they've always been known as a more brutish workhorses than amps of finesse) I used to gig with a (2) VT22 heads running through 2 dual showman bottoms (2 x 15 each)... heavy boat anchors... looked cool and was damn loud... no wonder I have hearing loss
however... i don't generally take on metal bands as it fatigues my ears rather quickly (and admitted I was never really into metal)
