gofar99 Messages: 1969 Registered: May 2010 Location: Southern Arizona
Illuminati (5th Degree)
Hi, that one seems to good only for low voltages. The preamp uses voltages in the 200-250 volt range. We do use a pair of LR8K4 regulators on the B+. No regulation is needed on the heater DC supply as the particular rectifiers we use drop just the right amount of voltage so it can feed the tube heaters.