Siemens
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Product Summary
Model: 1962 Siemens EL84 6BQ5 (Made in Germany)
Soundlumia Tube Sound Rating: 9.0/10 - Outstanding
Date codes: rX3 ‡2I (rX3 = EL84 Production Gen#3, ‡ = Munich, 2 = 1962, I = September)
GM (Mutual Conductance) test result: 90%/88% of NOS/NEW
Silkscreen: 90% - 100%
Packaging: NEW white tube boxes
Professional Tube Testing
This set was tested and certified by RoeTest V11 tester with the following result:
Tube 1:
Measured transconductance (GM): 10.12 mA/V - 90% (100% = 11.30 mA/V)
Measured plate current (IA): 41.39 mA - 86% (100% = 48.0 mA)
Tube 2:
Measured transconductance (GM): 10 mA/V - 88% (100% = 11.30 mA/V)
Measured plate current (IA): 42.82 mA - 89% (100% = 48.0 mA)
NO shorts, leakage or gas. NO noise or microphonics.
Curve trace is also included in the original RoeTest report.
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