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tube choice

I'm looking at one of the VTA amps.

Output tube choices are from 6550 and include KT88 and KT120.

I have a couple questions.

First? Just choose by sonics?

Second? Given PS limits, I don't see more 'power' but perhaps higher headroom? I realize the bottleneck could be any number of places from PS to output tubes to transformers.....power or output......

I've done a little looking at this and realize that the PS capacitor compliment is where it's at.......As voltage rises the energy goes up much faster. The 500v I see for some circuits represents a LOT of energy even at modest capacitance values.
Too much is never enough

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Topic - tube choice - pictureguy 16:13:59 07/07/21 (65)
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