U52 Mullard HELIX top mica RED PRINT ultra rare rugged plate large D-getter Holy Grail 5U4G CV575 pair 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.

Here we have the best U52 5U4G ever made by Mullard possibly Mullard Amerty. Super rare version of a U52 5U4G with tall glass, HELIX top mica, rugged plate and large getter.

Both valves have same shape A&M (Admiralty) made for the Navy, such a pair of heavy duty and robust valves

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