Newly rewinded chokes using vintage special core iron with air gap,
These are not power supply chokes, but they are plate load chokes and they are plate resistor load replacement.
These are very special chokes, they were winded using silk coated wire for very low capacitance.
The DC resistance is 1,7 kOhm

I personally have used the chokes in a SET amplifier driver stage using 6AC7 pentode in triode mode.

I'm very impressed with the result.

The chokes are rather small in size to be used in some amplifiers for upgrade, should be very cost efficient upgrade.

We can also make similar chokes for push-pull circuit.

Feel free to ask me any questions.