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6SN7 6H8C Sylvania USA Vintage Tested Strong
RARE AMERICAN STOCK — TESTED AND READY TO ROLL 💎 Classic Sylvania 6SN7 / 6H8C from the USA, selected for serious hi-fi systems and vintage tube amplifiers. This example has been smoke-aged and extensively tested for strong performance. Tube Details and Codes 📌 • US Tube Type: 6SN7 • European/Equivalent Code: 6H8C • Brand: Sylvania • Origin: Made in USA • Condition: Vintage, smoke-aged, tested strong on TV-7 Testing and Performance ⚡ • Verified on TV-7 tube tester with strong results • Suitable for preamps, headphone amps, and classic hi-fi amplification • Inspected for reliable operation in demanding audio use Sonic Signature 🎵 • Known for rich midrange, smooth highs, and authoritative tone • Delivers classic American tube warmth with refined musical texture
The Vintage Preamp Collection
Capture the atmospheric depth of the golden era with laboratory-verified signal artifacts that translate historical manufacturing mastery into a radiant and immersive listening experience.
-01KR5EXNMA28Y3AS2VX7BWHXM4.jpg) 6SN7 6H8C Sylvania USA Vintage Tested Strong | -01KR5E0SYV7TTA2T6EXWS483RH.jpg) 12AX7 ECC83 Valvo VINTAGE Delta Code Strong-Tested Matched | -01KR5E499J3M26EQQF6S1XFK23.jpg) 6DJ8 E88CC Valvo NOS Gold |  6DJ8 E88CC Mullard VINTAGE Made In England Strong TV7 Test |  6SN7 6H8C RCA USA Vintage Tested TV7 | -01KR5GRVAAWEZJJNE37JH1TG9Q.jpg) 12AT7 ECC81 Siemens VINTAGE German Made Tested Good |  12AU7 ECC82 Mullard Code B Philips VINTAGE Long Plate Tested Good | -01KR5H9VF67PYAT2855DR6F9B0.jpg) 6DJ8 E88CC Tesla NOS Gold-Pin Box-Plate | |
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| Price | $116.00 | $111.00 | $131.00 | $101.00 | $98.00 | $81.00 | $115.00 | $103.00 |
| Origin & Factory | USA Sylvania vintage | Vintage Holland Valvo | German NOS Valvo | Made in England | USA-made RCA vintage | German made Siemens | Philips rebranded Mullard | Czech NOS stock |
| Stock Condition | single vintage tube | Single vintage tube | single tube | single vintage tube | single vintage tube | single vintage tube | used vintage tube | factory sealed NOS |
| Measured Performance | TV-7 strong tested | TV-7 strong tested | cosmetic condition only | TV-7 strong emission | TV-7 tested | TV-7 tested good | tested good on TV-7 | verified unused original box |
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