2x Telefunken EF86 6267 Matching Codes - BWB Insignia - Diamond Bottom - Strong
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2x Telefunken EF86 6267 Matching Codes - BWB Insignia - Diamond Bottom - Strong

$224.00
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Product Summary Model: Telefunken EF86 6267 O-getter (Made in Germany) Soundlumia Tube Sound Rating: 9.5/10 - Outstanding  Unparalleled sound characteristics and superb build quality - True holographic sound stage with layered details and ultra clarity Date code(s): 72-05 (identical) GM (Mutual Conductance) test result: 90%/110% NOS Silkscreen: 100% Special feature(s): BWB "Falcon" insignia (military-grade) Packaging: NEW white tube boxes Professional Tube Testing NO shorts, leakage or gas. NO noise or microphonics. The two tubes tested Near NOS (90%+ mutual conductance value for NOS/NEW) and Strong NOS (110%+ mutual conductance value for NOS/NEW) respectively, on a reliable Mercury 2000 tube tester with the following result (mutual conductance both in uMhos and in percentage of NOS/NEW value):  Tube 1: 1,900 (95%) Tube 2: 2,200(110%) Good tubes start at 1,200 and new tubes (incl. NOS/NIB) 2,000, and the Mercury 2000's rated mutual conductance for new EF86

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