Tung-Sol Factory Platinum Matched PAIR TWO 6550 Reissue Amp Tubes 24hr Burn-in

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New, factory platinum matched PAIR (two) Tung-Sol 6550 tubes.  These are difficult to find at a reasonable price, so this is an opportunity to obtain a world class tube at a price that won't break the bank.<br>These are burned in for 24 hours,  factory matched at real world voltages and then the test results are labelled on each tube box.<br>As new tubes, these are covered by the factory 90 day warranty.<br>This new production Tung-Sol tube is manufactured at their Xpo-Pul factory (also known as Reflektor) in Saratov, Russia.<br>The new Tung-Sol 6550 has been closely constructed to the original specifications of the triple getter, 3-hole plate version. The build quality is top notch and the price is great, making them an excellent alternative to expensive NOS tubes.<br>They are matched by the factory at 400V plate, 225V screen and -19.1V bias.<br>Insist on factory platinum matched tubes for best performance.<br>I have been selling tubes of all types for more than ten years.  Buy with confidence.<br>On Nov-06-19 at 06:20:25 PST, seller added the following information:<br>Vacuum Tube Values is a Mundorf Premium Partner<br>