Hello, I have the power and output transformers from an old organ that used 4 EL84s in the power section, along with numerous 12AX7s. I was wondering if it would be possible to make a clone of a Marshall 18W with these transformers, except with 4 EL84s instead of 2 in order to compensate for the impedance mismatch (and to bump up the output power). The voltages from the power transformer are roughly what you'd get from a Marshalll power transformer, but would the existing preamp circuitry and phase inverter be able to drive the additional EL84 per side?
The circuit I linked is essentially the 18W circuit with 4 EL84's:
https://taweber.powweb.com/store/kits_60b.htm#6M36
https://taweber.powweb.com/store/kits_60b.htm#6M36
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