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Valvo

Valvo EL84 6BQ5 Matched Pair - Hamburg 1956/57 rX3 - Strong

Valvo EL84 6BQ5 Matched Pair - Hamburg 1956/57 rX3 - Strong

Regular price $128.00 USD
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Sound Sample:

Product Summary

Model: 1956/57 Valvo EL84 6BQ5 (Made in Germany)

Soundlumia Tube Sound Rating9.0/10 - Outstanding 

Date codes:
rX3 D6K (rX3 = EL84 production gen #3, D = Hamburg, Germany, 6 = 1956, K = November)
rX3 D7E (rX3 = EL84 production gen #3, D = Hamburg, Germany, 7 = 1957, E = May)

GM (Mutual Conductance) test result79%/77% of NOS/NEW

Silkscreen: 90% - 100%

Packaging: New white box

Professional Tube Testing

Tube 1: 

Measured transconductance (GM): 8.88 mA/V  - 79%  (100% = 11.30 mA/V)
Measured plate current (IA): 33.29 mA  - 69%  (100% = 48 mA)

Tube 2:

Measured transconductance (GM): 8.75 mA/V  - 77%  (100% = 11.30 mA/V)
Measured plate current (IA): 43.49 mA  - 91%  (100% = 48mA)

NO shorts, leakage or gas. NO noise or microphonics.

Curve trace is also included in the original RoeTest report.
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