Some of you military people might remember (or know of) that phrase.
Anyhow, I was changing the inputs on my Adcom GFA-555, going from computer to tiny am radio (3.5mm plug to RCAs), and I hear a POP.
No sound from left side speakers LSi F/X.
Both LSi speakers are alive and well.
GFA-555 left channel dead.
I'm relieved it was just the amp, but I don't know the first thing about repairing this thing, so I'm hoping that if I crack the case I might be able to find a blown fuse or something.