Ahhhhhh ok he he he....
Sometimes. the insulators of house wiring melts but the house fuse does not trip, that's because the current rating is still within the fuse's limits. Kaya it's safer to over-spec the wires, with respect to the fuse rating, kaya lang alam mo naman mga contractors, meron mga tipid mode and nandadaya.
In this amp's case, best case scenario will be a fried varistor, and the worst case is juanbote's post. So to answer the TS's post, yes, there is still hope.