770 PCB for preamp power supply.
Quantity in Basket:
Shipping Weight: 1.00 pounds
This is an excellent PCB for a tube preamp or tube
power amp power supply. It is laid out for tube
rectification using the 6X4 or any other 7-pin
miniature rectifier tube. This B+ circuit has 3 levels
of electolytic filtering on the PCB. There is also a
separate circuit for full-wave rectified filaments with
3 levels of electrolytic filtering on the PCB. For the
ultimate in filament filtering, you can also add one or
two chokes in place of the R6 & R7 resistors.
holes are larger diameter to take the larger wires of a
This PCB is super high quality glass epoxy and Made
in the USA. The PCB is furnished with a schematic.
For your convenience, you can order a
7-pin black plastic tube socket with this PCB for the
rectifier tube and be sure that it will fit the solder
holes on the PCB.
Use this link to view a large Hi-Rez photo of the PCB.
If you are a small or large OEM and want a larger
quantity order, please contact me for details. We have
80 of these PCB's in stock and can make as many more
as you need.