TWO Amperex 7591A Tubes / Amplitrex Tested / One SUPER STRONG, Two Good Singles
USD 189.00 USD
Specifications
| Brand | Amperex |
| Type | Vacuum Tube |
| Model | 7591 7591A |
| Country Of Origin | United States |
TWO Amperex 7591A vacuum tubes. Tested on Amplitrex AT-1000 tube tester (fixed bias mode). Tubes test at 11650 and 9690 where 6630 micromhos is pass/fail grade. 133% / 101.6% mA plate current. 114.2% / 95% gm mutual conductance.
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