Valvo
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Product Summary
Model: 1958 Valvo EL84 6BQ5 (Made in Germany)
Soundlumia Tube Sound Rating: 9.0/10 - Outstanding
Date codes:
rX3 D8F (rX3 = EL84 production gen #3, D = Hamburg, Germany, 8 = 1958, F = June)
rX3 D8I (rX3 = EL84 production gen #3, D = Hamburg, Germany, 8 = 1958, I = September)
GM (Mutual Conductance) test result: 87%/84% of NOS/NEW
Silkscreen: 90% - 100%
Packaging: New white box
Professional Tube Testing
This set was tested and certified by RoeTest V11 Professional Tube Testing System with the following result:
Tube 1:
Measured transconductance(GM): 9.87 mA/V - 87% (100% = 11.30 mA/V)
Measured plate current(IA): 39.37 mA - 82% (100% = 48 mA)
Tube 2:
Measured transconductance(GM): 9.5 mA/V - 84% (100% = 11.30 mA/V)
Measured plate current(IA): 38.17 mA - 80% (100% = 48 mA)
NO shorts, leakage or gas. NO noise or microphonics.
Curve trace is also included in the original RoeTest report.
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