6P1P 6П1П MATCHED PAIR (0% tol) 6AQ5 / EL90 SVETLANA OTK Tetrode Tube.NOS 1963 - 1975
Oxidation resistant contacts / pins.Price is for one pair(two tubes).
The 6P1P (Russian: 6П1П) is a Soviet-made miniature 9-pin beam tetrode vacuum tube
with ratings similar to the 6AQ5, EL90 and the 6V6. Because of a different pinout
(a 9-pin base versus 7-pin base) than an 6AQ5/EL90, it cannot be used as a plug-in
replacement for these types; however, it will work in the same circuit with
component values unchanged. Its maximum plate/screen voltage and dissipation
ratings are actually slightly higher than a 6AQ5. A ruggedized/extended ratings
version of the tube is designated 6P1P-EV (Russian: 6П1П-ЕВ), roughly
equivalent to the 6AQ5W. A Chinese-manufactured version of the tube also exists, labeled 6P1.
The type was commonly used in Soviet-built vacuum tube radios and TV sets as an output
audio amplifier, until it was replaced by the higher-performance 6P14P (an exact equivalent of the EL84).
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