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Yet Another 866A Video

By | August 27th, 2019|Categories: ItisHifi - Vintage|Tags: , |

This time a time lapse. Very strange not what I expected to see. I was surprised by the flicker rate because in our time they were solid blue. 

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Monolithic Tube Power Supply Success!

By | August 26th, 2019|Categories: ItisHifi - Vintage|Tags: , , , , |

Chris and I have been working on this power supply off and on for a year and a half. There is alot under the hood on this one. The previous power transformer failed but we had this beautiful Kenyon transfomer available. This power supply is stable and runs cool at 940v and 280ma.
 Of course the mercury vapors are 866A but the not so common tubes are the 6D22S which has a 30 second warm up.
 The blue glow is captivating and the westing house meters are stunning.… Read the full article

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