I’ve gotten to hear the rigs of Yngwie, Vai and EJ straight from the cabs from about 10 feet away from them, I could only tolerate about 15 seconds of Yngwie, he wasn’t even coming through the PA and the soundman couldn’t get the backing tracks loud enough over the amps.
Vai was fucking stupid loud but his cabs were spread out so you didn’t get the brunt of it directly in your face, he’s also had the loudest concerts I’ve ever been to, hands down. Like 1 more dB and it’d be painful. I dunno how many metal bands I’ve seen in small and large venues, Vai at the Parker Playhouse, 3 tours in a row, were the loudest shows I’ve ever fucking heard.
EJ is pretty damn loud, especially his clean tone because the open back cabs bounce off the back of the stage and fills it up with sound, you’d get blasted by his dirty cabs but when he’d switch to the cleans the whole stage would just fill up with sound and those fuckers are dialed in BRIGHT. While both EJ and Yngwie do the dimed Marshall thing, EJ rolling off the highs takes the brunt of the load off…..Yngwie was just full on treble and Marshall snarl, that was fucking brutal.