One more round of PCBs. Should have everything in the pipeline now for the 4P1L headphone amp, plus some test options for the driver tube, maybe do a shootout between all the little russian tubes.
I’ve designed the PCBs so they are modular and can be used stand-alone on a test board, or become part of an amplifier. They are not very consistent in size of surface area efficiency, but they are very flexible in testing out different tubes/voltages etc. This will allow me to use directly- and indirectly heated tubes by just changing out the regulator PCB from voltage to current (Colemand), and the B+ boards have 500Vdc rated film caps for a broad selection of tubes and operation points.
Once I have tested the amp to see if it works (iffy) and I am content (never!), I will most likely make new PCB’s to hold all the parts on a single board to save space and maybe use some better components; pretty much everything is sourced from Farnell/RS/Conrad at the moment. 
Filament Filtered (supply chassis, C plus common-mode choke)
B+ Raw (supply chassis, rectifier and first CLC)
B+ Filtered (signal chassis, RCRC for two voltages)
Filament dual Low-Drop (370mV) Regulator 3A (for indirectly heated tubes)
Filament Raw+Tranny (supply chassis, pcb transformer, rectifier and CLC,)
Filament Raw (supply chassis, rectifier and CLC)
6E6P Noval, but turned so I look straight into the filament
6S19S Noval, turned to look head-on into the filament, yes, still with wrong text 6S19P 🙁
And one I don’t have a screeny of: 4P1L Octal also turned to look into the filament. We like shineys!
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