1x Mullard EF86 6267 Dario Miniwatt Yellow Label Blackburn 1964 NOS

1x Mullard EF86 6267 Dario Miniwatt Yellow Label Blackburn 1964 NOS
1x Mullard EF86 6267 Dario Miniwatt Yellow Label Blackburn 1964 NOS
1x Mullard EF86 6267 Dario Miniwatt Yellow Label Blackburn 1964 NOS
1x Mullard EF86 6267 Dario Miniwatt Yellow Label Blackburn 1964 NOS
1x Mullard EF86 6267 Dario Miniwatt Yellow Label Blackburn 1964 NOS
1x Mullard EF86 6267 Dario Miniwatt Yellow Label Blackburn 1964 NOS

1x Mullard EF86 6267 Dario Miniwatt Yellow Label Blackburn 1964 NOS
Model: Mullard EF86 6267 (Made in United Kingdom). Lush and warm vintage tone, intiimate vocals, wide sound stage with layered details. B4K4 (B = Blackburn, 4 = 1964, K = November, 4 = Week 4 of production).

GM (Mutual Conductance) test result : 102% NOS. Packaging : NEW white tube boxes. This set was tested and certified by RoeTest V11 tester with the following result.

Measured transconductance (GM): 2.03 mA/V - 102% (100% = 2.0 mA/V). Measured plate current (IA): 2.875 mA - 96% (100% = 3.0 mA). NO shorts, leakage or gas. Curve trace is also included in the original RoeTest report.


1x Mullard EF86 6267 Dario Miniwatt Yellow Label Blackburn 1964 NOS