QUAD Electro Harmonix Factory Matched KT88 KT88EH Vacuum Tubes 24hr Burn-in

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New, factory Platinum matched set of FOUR (QUAD) Electro-Harmonix EH KT88 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.  They are matched by the factory at 400V plate, 225V screen and -19.1V bias.<br>The Electro Harmonix KT88-EH tubes have excellent linearity, power handling capacity and heat dissipation. Four-pillar construction and mica spacers help maintain a rugged mechanical reliability. This ensures classic tone is sustained at a prolonged, high output. A new leaded glass compound is utilized to maintain vacuum integrity, balanced performance and ensure long life.<br>They are all recent date codes.<br>I have been selling tubes of all types for more than ten years.  Buy with confidence.<br>On Nov-06-19 at 06:20:45 PST, seller added the following information:<br>Vacuum Tube Values is a Mundorf Premium Partner<br>