The adapters have to be like these eBay.es: vacuum tube adapter 12AU7 to 6SN7 en venta. Compra vacuum tube adapter 12AU7 to 6SN7 al mejor precio
Salas I listened a couple of hours the Itch with the changes of 18K in place of 47K as load resistor & the cathode diodes and now is sounding plenty of power in my mu-follower headphone amp, next week I will listen the #26 to see if is enough gain with my Wilson Audio Cub 94dBs. Again a great design, thanks to share and all help received to make it possible & enjoy it.
There are many ways to skin a cat and when the technically sound goals like no ripple to speak of and steady B+ are met there will be solid arguments against more "exotic" circuits just to do a simple job. Maybe because the practical circuits are large loop areas with many extra vulnerabilities, the wide low impedance output of a shunt helps more than predicted somehow. Just maybe. But if you feel it does good after your own experience to a low power simple circuit, and you don't mind the building and the dissipation, there is no reason to stop you using it, its a hobby not the Samsung production budgeting department.
