This is where I was at circa 1979...lower powered push/pull amplifiers with regulated (solid state) power supplies, regulated DC filament supplies, and gadzooks...running pentodes in triode at 330 Volts Class A. I had plently of high horsepower pentode amplifiers including some of my own whoppers...and none of them compared to the quality of these two....the endless cycle of the auio arts...What is new?.....only our perspective.

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