The Devil said:

An answer to what? You didn't ask a question--you simply decided that
KT88s are only capable of producing five watts of power. You then
decided that must be the reason why my KT88 amps are free of audible
hiss.

Arny apparently thinks you're using them in single ended triode mode.
Not all that bad, by the way. If you have 100 dB/w/m speakers :-)

--
Sander deWaal
"SOA of a KT88? Sufficient."