Would be good to add this verbiage.
"Although it is recommended to bias each JFET to 5V, there is nothing to stop you from experimenting
with different bias voltages, however keeping Q3 at 5v is recommended."
Many of us (at least me) like seeing the added info to the notes of the layout.
Just a thought :)
Cheers
Chris
Yeah, 220, 221. Whatever it takes.