Second hand Crown Macrotec, old, and so bloody heavy that the audio production industry dropped them like a hot rock as soon as class D became a thing, but damn near indestructible.
I used a bridged MA5000VZ as a 120V 60Hz power supply for a tone wheel organ at a gig once (Band had failed to tell us that the 120V needed to be 60Hz not 50!).
Most PA stuff is thermally designed around a 1/8th duty cycle which is ample for music, AC Power, not so much, also capacitive loads can be a bit of a problem if it gets excessive.
Regards, Dan.