2x TESLA RD27AS

You are bidding for matched pair of Tesla RD27AS
Vintage PX25 equivalent made by TESLA in the former Czechoslovakia: RD27AS (=CV1040 / Mazda PP5/400 / Mullard D024, DET5, DA30). These are huge, directly heated (4V/2-2.3A) power triodes capable of up to 27W anode dissipation, intended for application as a class C power amplifiers, and are as desirable and collectable as the Osram, Mazda and GEC types. They feature huge ribbed, coated planar anodes, high quality double D getters, large anode supports on both sides, holes in both sockets and thick glass bulbs.
These are professional-grade tubes intended for military and industrial purposes!

The tubes are tested at 100% (54mA and 53mA) of anode current and transconductance (11,5mA/V and 11,5mA/V) values.


Combine shipping is possible !

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