Everyone has bad gear experiences, but my traumatic time at the hands of a Quad VI and Warwick 'Terminator' drove me nuts for about 4 months.
I limped through the tour, and by the time we came to rehearse again, I'd ditched the Quad VI in favour of a Warwick solid state amp, and that, or the terminator failed after about 5 days. In the end I used an old Peavey 150W amp and knackered old 4 x 10 and 1 x 15, and it blew the Warwick stuff way....
i complained to the dealer that my Quad VI and terminator were too quiet, and if I plugged in to the vocal PA, it was perfect by comparison. "Ah" he said, "but the sound quality is so much better on the Warwick.." Great, but if you can't hear it, who the f**K cares..?
Sorry for the rant, but I'd spent hundreds of GBP on 'Pro' Warwick gear and courier fees to get absolutely nowhere.
I might chuck it all in a landfill and save for some Ampeg gear - 8 x 10" cab & amp combination I used last year absolutely thundered. It had 'that' sound.
GO AMPEG!! (imho)