Telefunken
Telefunken EL84 6BQ5 Matched Pair - ◇ Bottom - Ulm 1961 - Near NOS
Telefunken EL84 6BQ5 Matched Pair - ◇ Bottom - Ulm 1961 - Near NOS
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$191.00 USD
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Product Summary
Model: 1961 Telefunken EL84 6BQ5 (Made in Germany)
Soundlumia Tube Sound Rating: 9.5/10 - Outstanding
Early 1960s Ulm, Germany production - Unparalleled sound characteristics and superb build quality - True holographic sound stage with layered details and ultra clarity
Date codes:
(U)???1192 (U = Ulm, 1 = 1961)
(U)6101501L (U = Ulm, 1 = 1961)
GM (Mutual Conductance) test result: 95%/96% of NOS/NEW
Silkscreen: 90% - 95%
Packaging: NEW white tube boxes.
Professional Tube Testing
Tube 1:
Measured transconductance(GM): 10.75 mA/V - 95% (100% = 11.30 mA/V)
Measured plate current(IA): 45.52 mA - 95% (100% = 48 mA)
Tube 2:
Measured transconductance(GM): 10.87 mA/V - 96% (100% = 11.30 mA/V)
Measured plate current(IA): 47.92 mA - 100% (100% = 48 mA)
NO shorts, leakage or gas. NO noise or microphonics.
Curve trace is also included in the original RoeTest report.