Hi there, I plan to implement this circuit, the only differences will be these ones :
EF86 : 250V B+, 82K or 87K plate resistor , 1.5K cathode resistor to get 1.65mA at about 112V plate-to-cathode. CCE Mod using 0,1 uf cap.
EL84 : 290V p-k, and 45mA (200 Ohm cathode resistor)
Coupling cap : 0,01 uf (mundorf).
![](http://www.bonavolta.ch/hobby/images/audio/el84_3.gif)
Any comments, suggestions, advices?