Catalinbread RAH clone (Apollo preamp) question

[Oh_Discordia!]

Z1, Z2, Z3 call for a 1N4739A zener diode. Can I substitute a 1N5239B? its also 9V, but hoping someone can confirm.

 

[JamieJ]

I’d assume so. That’s only for MOSFET anti static protection.

 

[Oh_Discordia!]

I’d assume so. That’s only for MOSFET anti static protection.

excellent. thanks. one of these days I need to dive in to how to REALLY read a schematic to know what does what......