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Siemens

Siemens EL84 6BQ5 Matched Pair - Munich 1960 rX3 - Near NOS

Siemens EL84 6BQ5 Matched Pair - Munich 1960 rX3 - Near NOS

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Sound Sample:

Product Summary

Model: 1962 Siemens EL84 6BQ5 (Made in Germany)

Soundlumia Tube Sound Rating: 9.0/10 - Outstanding

Date codes: rX3 0J (rX3 = EL84 Production Gen#3,  = Munich, 0 = 1960, J = October)

GM (Mutual Conductance) test result: 100%/98% 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): 11.25 mA/V  - 100%  (100% = 11.30 mA/V)
Measured plate current (IA): 48.29 mA  - 101%  (100% = 48.0 mA)

Tube 2:

Measured transconductance (GM): 11.13 mA/V  - 98%  (100% = 11.30 mA/V)
Measured plate current (IA): 43.34 mA  - 90%  (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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