5691 NOS JAN Phillips Black Plate
[5691 6SL7]

This is the Phillips JAN 5691 Black Plate twin triode small signal tube. These feature dual round getters, triple mica supports for extremely low microphonics. The mica spacers are supported by five (5) heavy support rods. Perfect for any 6SL7 application.

Date code on these are 1985.

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