well, the El-diablo :twisted: gets mentioned again, and i am the resident owner! Sambo was asking a while back and i do believe i forgot to comment, sorry our fella :oops:
anyway, i'd agree that it's in the Mesa ballpark gain wise, there's no shortage of the stuff available! it's definately geared towards metal though, you can get more classic rocky sounds out of it, but it prefers all out war. also, it has a very definite personality of it's own, which it stamps all over whatever you're playing through it. what i mean is, if you plug a les paul into a Marshall, you'll get a thick crunchy sound, plug in a strat and you'll get less gain and a springier edgier sound. through the El-diablo :twisted: this difference seems less apparent. it's there to an extent on the clean channel, but on the hot channel it's a lot less subtle and not at all transparent. the clean channel can be driven to a light overdrive, then the dirty end starts at mayhem and works it's way up! which is great a lot of the time, but not always ideal. it makes for much less difference between different guitars.
of course, maybe i just need to learn how to work my amp properly :roll:
if a modern sounding metal biased amp is what you want, the El-diablo :twisted: 's hard to fault (i have to put a devil after it, it told me so), but it would be best to try it out with your own guitar to see how it sounds.