The GEC U52 is arguably the best sounding 5U4G Full-Wave rectifier ever made, other than the Western Electric 274A and 274B. These british made U52 tubes are brand new NOS in original boxes (branding on tube varies but all are original GEC made U52), and were made in the 1950's at the Hammersmith factory by Genalex (Marconi Osram - M-O Valve). All pieces are exactly the same with brown bases. Precision tested and pairs are digitally matched on our Amplitrex AT-1000. Exactly same construction as Gold Lion U52, just branded for the UK military. $424.99 per tube. Recommended for : Woo Audio, SET and Wright Sound SET, Audio Note P4, Dared MCP7 , Singlepower, Modwright, Donald North Audio
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