FW4/500 Mullard 45IU NU12 U18/20 Thick plate, Holy Grail collectible audio valves
Mullard large plate FW4/500 £ 300 pair.
Mullard large plate FW4/500 £ 550 quartet.
Description
Few valves may equal the construction of a Mullard FW4/500 of this kind.
We offer a selected pair or quartet of these rare Mullard FW4/500 valves.
You can clearly see they have large plate where each section of the filament is held by supporting springs.
A sturdy, robust valve at all levels ideal for heavy duty and steady rectification.
All four FW4/500 Mullard valves have been successfully tested with 100% emission and working order.
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