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Posts Tagged ‘Jackson-648A’

I’ve come to test your tubes with my new Jackson!

May 20th, 2008 Mitch Brisebois No comments

Strange things happen when your parents decide to clean out their basement and offer up vintage junk they'd been hoarding! This past weekend, I acquired a Jackson Instruments Model 648A portable dynamic tube tester (circa 1948 - maybe). Now I'm looking for some tubes to test!! "Tubes? What are tubes?? ...

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