UU120/500 Mazda pair balloon audio rectifiers Holy Grail of valves IW4 R2 R3
Mazda UU120/500 £ 900 pair.
Description
The Mazda UU120/500 is quite an obscure valve which saw the light in 1931.
It is a sophisticated version of the DW4 with filament at 4 Volts. You can also see a white patch that cover most of the envelope, that was made to preserve valve from magnetic fields.
Lettering are etched on top glass for your reference.
We do know that very FEW of these valves are still around these days.
This is your chance to purchase a pair of good tested, perfect condition Mazda UU120/500.
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