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Valvo

1x Valvo EF86 O-getter Mesh Plates - Mullard Label - Hamburg 1969 - NOS

1x Valvo EF86 O-getter Mesh Plates - Mullard Label - Hamburg 1969 - NOS

Regular price $72.00 USD
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Product Summary

Model: 1969 Valvo Hamburg EF86 6267 O-getter Mesh Plates (Made in Germany)

Soundlumia Tube Sound Rating9.0/10 - Excellent

1960s Hamburg production - The real King of Bass - Unparalleled musicality with great substance and weight in midrange presentation

Date codes: D9E1 (D = Hamburg, 9 = 1969, E = May, 1 = Week 1 of the production month)

GM (Mutual Conductance) test result: 95% NOS

Silkscreen: 95% - 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): 2.36 mA/V  - 118%  (100% = 2.0 mA/V)
Measured plate current (IA): 3.745 mA  - 125%  (100% = 3.0 mA)

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

Curve trace is also included in the original RoeTest report.
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