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5751 tubes -- Raytheon

In many tube discussions and shootouts, the Raytheon 5751 tube garners excellent reviews. Invariably, it is the 2-mica blackplate version with the unique windmill, or propeller, getter that is discussed--even in the well-known Joe's Tube Lore review, he has a footnote saying this is the tube reviewed. But a 3-mica blackplate, D-getter version exists and these tubes sound wonderful in my CAL Alpha DAC and Jolida 302b preamp. They are even more scarce it seems than the scarce windmill getter version. Does anyone know anything about the 3-mica Raytheon 5751 tubes--when they were made, are they re-branded GE or RCA tubes, etc.? Thanks.
zinfan2

Showing 1 response by ed_sawyer

ed_sawyer
588 posts
 
They are most likely made by Raytheon. Hard to say w/o looking. Probably earlier than windmill getter, almost certainly. More scarce? hard to say. THere is much hoarding going on with the windmill types, so difficult to say how many are out there, but they are not that common, and in more demand I'd think.

Nice tubes, in any case. Sylvania made some nice versions of this tube too.

-Ed
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