4 vintage Westinghouse 7591 tubes - tested new- matched
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4 vintage Westinghouse 7591 tubes - tested new- matched 4 vintage 1963 westinghouse 7591 tubes with matching date codes of 337309 i have listened to these and they are great sounding tubes tested on my hickok 539c mutual conductance tester - the minimum for 7591 is 5800gm - no gas - no shorts tested at: 11500 53.1ma, 12000 55.2ma, 12500 57.5ma, 12500 59.9ma nicely matched pairs
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