I hope not. I have other amps but I'll know Thursday at a rehearsal for a sub gig. The amp kept going in and out of protect mode which makes me think the power kept going below the required min. for the amp.I've used tube Ampegs, old and busted Hartkes & Peaveys, GKs and Eden...all over the map. I even used an AudioSource vocal monitor at one time.
Now that I think twice about it, perhaps it wasn't dirty power during your situation. Mysterious. Hope it didn't mess up your rig permanently.