The beauty of this circuit deserves its own thread.
After considering Mr. Pass's 2025 Beast R2, I have tentatively settled on a 3-in-parallel J113 XEN Circlotron cell.
The triple cell attached idles at ~32.5mA and leaves class A at ~ 83 mA peak.
My plan is to have 6 of these triple cells driven by one cell for a total of 7 cells per "row" on a PCB.
A triple-in-parallel cell will have 6 resistors and 6 JFETs. The PCB layout should work out nicely as per the attached drawing.
6 "rows" will yield about 1A idle total for the output JFETs. The actual idle can be adjusted with the V_adj supply.
Peak current should be ~ 2.5A per the simulation. Actual peak current may vary.