Siemens ECC81 / 12AT7 – 1967 Valvo Label – Small O Halo, Matched Sections
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1967 Siemens Valvo ECC81 / 12AT7 – Small O Halo Getter – Matched Sections
• Model: ECC81 / 12AT7
• Manufacturer: Siemens, Germany
• Branding: Valvo label, Siemens internal construction
• Year of Manufacture: 1967 (Code: ‡7H)
• Getter Type: Small O Halo
• Construction: Gray plates, halo getter, glass-etched VF4, factory code BMV+dg 468
• Condition: Testing Good
• Tube Type: Dual triode with matched sections – balanced performance
📊 Test Results (Triplett 3444):
- Gm (Transconductance): 4,100 / 4,100
- mA (Current): 7.6 / 7.6
- Minimum Good: 3,500 Gm
- Average New: 5,400 Gm
- Noise/Microphonics: Quiet – no shorts, gas, or leakage
🎛️ Applications:
Perfect phase inverter or driver tube for:
- Fender Super Reverb – V6 position
- Ensemble Evocco Integrated Amp (1998)
- Fender '65 Twin Reverb and other 12AT7-based circuits
📦 Ships fast, insured, and well-packed from a trusted seller – VTubeAudio.
Inv. 7-1 77341715
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| Listed | a year ago |
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| Condition | Excellent (Used) Excellent items are almost entirely free from blemishes and other visual defects and have been played or used with the utmost care.Learn more |
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