Mullard
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Product Summary
Model: 1959 Mullard EL34 6CA7 (Made in the United Kingdom)
Soundlumia Tube Sound Rating: 9.5/10 - Exceptional
Date codes: Xf1 B9C (Xf1 = Mullard EL34, B = Blackburn, 9 = 1959, C = March)
GM (Mutual Conductance) test result: 67% of NOS/NEW
Silkscreen: 90% - 100%
Packaging: NEW white tube box
Professional Tube Testing
This set was tested and certified by RoeTest V11 Professional Tube Testing System with the following result:
Measured transconductance(GM): 7.37 mA/V - 67% (100% = 11 mA/V)
Measured plate current(IA): 60.89 mA - 61% (100% = 100 mA)
NO shorts, leakage or gas. NO noise or microphonics.
Curve trace is also included in the original RoeTest report.
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