1x Mullard EF86 Long Mesh Plates 15° Square D Getter Philips Label Blackburn '59
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Electronics / Audio

1x Mullard EF86 Long Mesh Plates 15° Square D Getter Philips Label Blackburn '59

$118.00
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Product Summary Model: Mullard EF86 6267 (Made in United Kingdom) Soundlumia Tube Sound Rating: 9.0/10 - Outstanding Lush and warm vintage tone, intiimate vocals, wide sound stage with layered details Date code(s): B9C (B = Blackburn, 9 = 1959, C = March) GM (Mutual Conductance) test result: 100%/105% NOS Silkscreen: 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): 1.31 mA/V  - 66%  (100% = 2.0 mA/V) Measured plate current (IA): 2.29 mA - 76%  (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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