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Number of tubes in Pure Class A amps

Can someone explain, as simply as possible:), how, eg a Jadis DA S88 (60 WPC) needs 8 KT 88 output tubes, whereas an Ayon Spirit II, also advertised as pure Class A (60 WPC in pentode mode, 40 in triode) only has 4 KT 88 output tubes? Is the power output ability in pure Class A not a linear function of number of tubes?
springbok10

Showing 1 response by bongofury

bongofury
1,160 posts
 
Allen

This has always been something of a mystery to me the exact difference within tubes, and I have never seen it written about in such a straight forward fashion. Really insightful in the best possible way!
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