The New Old Stock G.E.C. test results prove this is an excellent tube

First, you need to know what the Amplitrex is. The Amplitrex AT-1000 is the state of the art computerized tube tester and one of the only tube testers produced that is able to work independently and has custom interfaced software for PC operation. The Amplitrex AT-1000 is a current production tube tester and unlike tube testers built 35 to 55 years ago, the Amplitrex offers laboratory grade testing under microprocessor control and makes it possible to check a tube according to the original manufactures design specifications. Even more valuable is the ability to duplicate not just our guitar amplifiers circuit parameters but any guitar amp parameters. Read the rest of this entry »