In article ,
Johny B Good wrote:
Best guess, based on your description of the thunderstorm, is that
the "The Free Electrity" produced a surge voltage along the balanced
line that comfortably exceeded the amplifier's input common mode
rejection by a wide margin (exacerbated by being powered down - it
might even have survived if it had been switched on and the pulse
voltage low enough).

There are 5 other amps sitting across the same line - and all switched off
when the storm happened in the middle of the night. Although those all
have SSM 2143. Or THAT 1246.

I'm not sure it was the storm that caused it - could just have been
coincidence. There is a third 2017 in the amp powered from the same PS
which is used as a mic amp when needed - but that wasn't plugged to
anything. It still works. Although it does have protection diodes across
its input because of the phantom power.

--
*I don't know what your problem is, but I'll bet it's hard to pronounce

Dave Plowman London SW
To e-mail, change noise into sound.