Members A Very Special Piccolo Posted May 20, 2015 Members Share Posted May 20, 2015 I have a set of 4 matched Ruby brand KT88 vacuum power tubes to be sold or traded for a new / unused matched quad set of 6L6 tubes. Apart from a few minutes of testing, these tubes are unused. I bought these tubes a while ago from thetubestore.com to eventually replace the ones in my amp, and I'm selling them because my amp actually needs 6L6 tubes, and not KT88s. So I'm selling these so I can buy the right kind of tube for my amp. That said, I am also willing to trade this quad matched set of new / unused Ruby KT88 tubes for a quad matched set of new / unused 6L6 tubes. The Plate Current and Trandconductance readings for these 4 tubes are: 34.0 mA / 4630 35.1 mA / 4650 34.3 mA / 4580 34.9 mA / 4500 Link to comment Share on other sites More sharing options...
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