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