6X4 U78 Marconi Osram carbon plate rare audio rectifiers with Square getter Holy Grail EZ90

Description

Though a small 7-pin rectifier, the 6X4 EZ90 U78 can be used in many radio sets as well as audio amplifiers when such a valve is required.

The input is 325-0-325. Audio Magical will show some of the most successful 6X4 EZ90 and other variations of the same valve.

This sections shows the rarest EZ90 6X4 ever made and the earliest ones and we refer to the stunning U78, black plate and square getter.

We offer all genuine U78 6X4 made by the Marconi Osram in the early 1950s and remain the best ever made 6X4

Can be sold in pairs or quartet, please check price below.