Even the Rev 1 is not the most growly or raw amp. It’s still more on the smooth, polished side, but less so than the later revisions. Very possible you could still find it to have that generic thing. The Rev Blue I remember being brighter and more cutting, which maybe could make it a more practical amp for things like band use, but they just don’t have the same over the top thing going on. The Rev 1 I think is sort of a one trick pony since it’s always compressed, quite dark (Rev blue may have been trying to “correct” that) and over the top, but it has this brutal, cartoonish, thunderous thing going on that imo just got lost in the Rev 2, Blue and Twin Jet. Might be my most brutal amp overall, but doesn’t have it all
It’s also the greasiest, most saturated amp I’ve had. The later ones can be too, but not like the Rev 1. It feels so easy to play and just so great for shred or sweep type stuff, but not as good for slower type leads where I wanna hear a more nuanced, detailed tone. Basically a great amp for all things extreme lol, but not more subtle things