Both tubes tested and matched on an amplitrex AT1000 tube tester with the following results Tube 1- 64% emissions 70% gm Tube 2- 82% emissions 83% gm
Item Tag: 7591
Westinghouse GE 7591-A Output Tubes Pair
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Pair 7591 Tubes McIntosh USA Sylvania for MC225 Fisher 500 Scott HK Pilot Eico
Made in USA.