Well....A few months ago I reported the sad demise of a Henry 2K
console amp when a CB idiot thought he could "put out 5000 watts" by
driving two 3-500z tubes with one 3-500z tube. It was a nice amp.
May it rest in peace.
Yesterday I heard another CB idiot with a recently purchased
Kenwood 922L amp also which also uses two 3-500z tubes. What does he
do? He decides to drive the two 3-500z tubes with a Palomar 300a.
The Palomar 300a uses 2 6kd6 tubes driving 4 6kd6 tubes. I use to own
a Palomar 300a back in the 1980s. They will dead key about 125 watts
on low and 275 watts on high.
The recomended driving power per the manufacturer datasheets for a
single 3-500z tube is about 35 watts depending on the plate voltage.
I think the Kenwood 922L uses about 2500 plate volts, class B, and is
cathode driven.

See..

http://169.237.38.248/sonic/3-500z.pdf

The idiot was wondering asking his buddy if his audio was distorted
with both amps turned on. It was. He also claimed that the 3-500z
tubes in his newly acquired Kenwood 922L amp must be getting weak, and
need to be replaced. I wonder why? I give the Kenwood 922L amp about
a month left to live.

*sigh*

May it rest in peace.