Vacuum Tube - 12AT7 / ECC81, Electro-Harmonix

Electro-Harmonix
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Vacuum Tube - 12AT7 / ECC81, Electro-Harmonix

$13.75
In Stock

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
SKU:
T-12AT7-EH
Item ID:
004425
UPC/EAN:
609722128308
Brand:
Electro-Harmonix
RoHS Compliant
Product Measurements by Type
Amplification Factor50
Capacitance, each triode1.6 pF
Capacitance, input2.5 pF
Capacitance, output0.4 pF
Cathode to Heater Voltage< 200 V
Grid Circuit Resistance (Rg), Automatic Bias, Each Triode1.0 MΩ
Grid Circuit Resistance (Rg), Fixed Bias, Each Triode0.25 MΩ
Grid Reverse Current0.5 μA
Grid Reverse Current Max55 mA
Heater Current330 - 360 mA
Heater Voltage6 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 Information
Packaging Dimensions1 in. × 1 in. × 3 in.
Weight (Packaging)0.038 lbs.

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Specifications, Files, and Documents

PDF: Specification Sheet Specification Sheet30.78 KB

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Product Reviews

5.00 out of 5 based on 1 reviews
- December 31st, 2020
5 out of 5

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

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