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6AU6 6136 EF94 Sylvania NOS USA Vintage Signal Tube
RARE NEW OLD STOCK USA-SPEC SIGNAL TUBE 💎 Sylvania 6AU6 / 6136 / EF94 is a highly regarded vintage small-signal pentode, prized for clean gain, low noise, and classic American-made tube character. New Old Stock condition makes this a strong choice for restorations, phono stages, and premium audio circuits. Tube Details and Codes 📌 • US Type: 6AU6 • European Codes: 6136 / EF94 • Brand: Sylvania • Origin: Made in USA • Condition: NOS New Old Stock Testing and Performance ⚡ • Verified unused New Old Stock stock • Ideal for low-noise signal applications • Excellent choice for vintage amplifier restoration • Stable, reliable performance for critical audio use Sonic Signature 🎵 • Clean, articulate presentation with strong detail retrieval • Open midrange and smooth top-end refinement • Excellent for bringing clarity and control to vintage tube gear
The Hidden Engineering Gallery
Analyze the impact of premium internal builds on your audio signal.
-01KQH57BQDTGCRN6JTEHQSM5YP.jpeg) 6AU6 6136 EF94 Sylvania NOS USA Vintage Signal Tube | -01KQH5QVBYYD7AXMG3DB55DH6A.jpeg) EM80 EM80 Tesla VINTAGE Display Tube Tested |  EM84 Vintage Display Tube Tested Good German Stock |  6N3P 5670 6CC42 Tesla VINTAGE Tested TV-7 |  EF804 Telefunken NOS Silver Plate | -01KQH9D8ZS0F5HTPVJKET3E2EJ.jpeg) 6BL8 ECF80 Lorenz NOS German Stock Adapter For 7199 amplifiers | -01KQHAJYNBK5SQA5CSA9CV5YMH.jpeg) EF804 Telefunken NOS Diamond Bottom German Made | -01KQHACQJZ9KQ9H5DC32W0V558.jpeg) 6BL8 ECF80 Valvo VINTAGE Hamburg Gold Pin Matched Triode | |
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| Price | $61.00 | $69.00 | $73.00 | $71.00 | $84.00 | $84.00 | $79.00 | $96.00 |
| Origin & Factory | Made in USA Sylvania | Czechoslovak Tesla | German/European stock | Tesla vintage Europe | German NOS Telefunken | German NOS stored | German-made Telefunken | Valvo Hamburg Germany |
| Stock Condition | NOS new old stock | single vintage tube | vintage hi-fi stock | preowned tested stock | new old stock | original box inventory | new old stock | matched triode pair |
| Measured Performance | verified unused NOS | tested good | tested good functional | TV-7 emissions verified | verified NOS condition | NOS | no prior use reported | strong emissions verified |
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