theres a nicely priced pair of 60s siemens E88CC here https://www.superbestaudiofriends.org/index.php?threads/fs-nos-ecc82-12au7-tubes.13796/
saw this on USAM, but it says sold. doesnt say sold here. did the sale not go thru? do you still have it?
sure, lotsa tubes will improve the sound; more importantly, it didnt take out the power transformer, which is enough of a risk with the 5691 that...
@Erroneous, the 5691 is not a drop-in for the 6SL7, as it has twice the heater current. its not compatible with the tavish vintage. to quote...
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