I doubt if anything bad has happened. I have a bi-amped system
using a pair of quicksilver KT-88 monos for mid & high freq.
our power being supplied by the electric Company is so undependable it has gone out while the system was playing and before I could get to the power switch(seconds) the power came
back on. NO DAMAGE - however that will shorten tube life
As a result I went out and bought 2 APC battery back ups
It never has been problem since
using a pair of quicksilver KT-88 monos for mid & high freq.
our power being supplied by the electric Company is so undependable it has gone out while the system was playing and before I could get to the power switch(seconds) the power came
back on. NO DAMAGE - however that will shorten tube life
As a result I went out and bought 2 APC battery back ups
It never has been problem since