Guys,
Thanks for all your replies!
My friend has his JC-1's plugged directly into dedicated outlets.
Unfortunately, he bought the units used about 15 months ago, so there is no warranty on them.
He did have this amp repaired by Parasound in July 2005.
He accidently dropped an interconnect on the speaker cables where they exit the amp, and it caused a short circuit and they had to replace all the output transistors, mosfet drivers, fuse, some resistors, emiter diodes, etc.
This time, however, he did nothing wrong...the amp just self destructed.
He also said that the amp hadn't acted completely normal since it was repaired. He said it would shut itself off occasionally for a few seconds, then resume normal operation. He said when it would do this the blue halo light around the power on button would turn red.
He said this would happen up to 4 times per hour on certain days, and was totally unpredictable.
Thanks again for all of your responses!
Angela