U52 Tungsram 5U4G black ribbed plate double top mica square getter narrow plate tested 100%

Description

The U52 aka 5U4G is one of the best selling valve here at Audio Magical.

We had many requests about this valve and its variation.

We thought it is our commitment to show all that is available for this directly heated full wave rectifier that saw the light in the 1940s.

With a rating of 500 Volts on the anode, the U52 remains the best option for any vintage and modern set.

Please browse through all we have including precious Mullard long cone long glass U52 (5U4G) and other variations.

Pair Tungsram 5U4G  U52 white letters on glass made in England

Both Tungsram U52 have same code on glass that is 5U

Both Tungsram U52 5U4G have same design and double top mica. Surprisingly  made at Mullard works.

Tested with AVO VCM 163 with A1=A2 100% emission