NATIONAL 6U8 6AX8 A 6EA8 TUBE SINGLE NOS NIB ORIGINAL BOX
USD 9.98 USD
Specifications
| Brand | NATIONAL |
| Country Of Origin | United States |
| Model | 6U8A |
I have a B&K 747 tube tester. This is a mutual conductance tester. I also use a Tektronix curve tracer for testing triodes. I give a number of evaluations for tubes. The lines show how the tube conducts throughout that range.
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