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GEC stereo KT88 class A amp

This is a nice poweramp , the tubes are well used , it is an entirely symmetric affair as the fase is split right at the beginning , this is probably an amp that was never commercialised but schematic given as example in the databooks .

I believe this one to be really fun to build and enjoy as i think you'll have a rare amp !!!!!!

A few suggestions :

Remove the autobias caps on the inputstage , reduce feedback , use a Lundahl LL1663PP

the network around with the 470pF and 10k throw it in the garbage with the 5nF and 4,7M

Enjoy it !