Vacuum Tube - 12AT7 / ECC81, Electro-Harmonix
Superior large plate format Twin Triode, ideal for use in driver and reverb circuits. Offers superior dissipation compared to NOS versions of this tube.
- Excellent 12AT7 choice choice for HiFi
- Also suitable for guitar amp circuits
- ECC81 equivalent
RoHS Compliant
Accessory Items:
Amplification Factor | 50 | ||
Capacitance, each triode | 1.6 pF | ||
Capacitance, input | 2.5 pF | ||
Capacitance, output | 0.4 pF | ||
Cathode to Heater Voltage | < 200 V | ||
Grid Circuit Resistance (Rg), Automatic Bias, Each Triode | 1.0 MΩ | ||
Grid Circuit Resistance (Rg), Fixed Bias, Each Triode | 0.25 MΩ | ||
Grid Reverse Current | 0.5 μA | ||
Grid Reverse Current Max | 55 mA | ||
Heater Current | 330 - 360 mA | ||
Heater Voltage | 6 V / 12 V | ||
Plate Current (Ia) | < 18 mA | ||
Plate Dissipation, per triode (Wa) | 3.25 W | ||
Plate Voltage (Ua) | < 330 V | ||
Transconductance (S) | 4.5 mA/V |
Packaging Dimensions | 1 in. × 1 in. × 3 in. | ||
Weight (Packaging) | 0.0353 lbs. |
Specification Sheet | All Models |
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Specifications, Files, and Documents
Questions? Contact us at [email protected], or give us a call at 480-296-0890
Substitute Products
The following items can be substituted for this product. While not necessarily exactly the same, they will function as replacement items in your project.
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Product Reviews
Item arrived on time & works well.
Out of three 12AT7s, specifically purchased for phase inverter duties in two Fender amps (DRRI and Super Sonic 60 combo), this one is the winner. The other two, a JAN 12at7wc and JJat7, worked fine, just not as clear and strong the EHX. The amps seem to be louder and sound better. Of course, YMMV.
Peace,
Tim D