Vacuum Tube - 12AT7 / ECC81, JJ Electronics

Vacuum Tube - 12AT7 / ECC81, JJ Electronics

JJ Electronics
Pictured: Regular
Pictured: Regular
Pictured: Gold
Pictured: Gold
Pictured: Regular
Pictured: Regular
Pictured: Gold
Pictured: Gold
Customer image:<br/>"new tubes, in an old radio"
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Pictured: RegularPictured: GoldPictured: RegularPictured: Gold
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Customer image: "new tubes, in an old radio"
Starting at: $10.95
In Stock

The JJ Electronic 12AT7 / ECC81 is a good choice for phase inverters, reverb drivers, and general preamp use. This tube offers low noise, low microphonics, and warm smooth tones at a great price. Like all JJ tubes, it has a rugged construction that doesn’t compromise the sound of your amp. The JJ 12AT7 is a solid replacement for any 12AT7, ECC81, or 6201 tube. It can also be used to replace 12AX7 tubes in position 1 to reduce gain.

RoHS Compliant
SKU:
T-12AT7-JJ-X
Item ID:
004428
Brand:
JJ Electronics
Part Numbers
Pin TypeOur Part NumberUPC/EANJJ Electronics Part Number
GoldT-12AT7-GOLD-JJ609722123471 ECC81 / 12AT7 - GOLD
RegularT-12AT7-JJ844632064036 ECC81 - 12AT7
Product Measurements by Type
Body Height49.2 mm
Cathode Current (Ik)≤ 15 mA
Filament Current (If)300 / 150 mA
Filament Voltage (Uf)6.3 / 12.6 V
Gain (μ)60
Grid Circuit Resistance (Rg)1 MΩ
Grid Voltage (Ug)≥ -50 V, -2 V typical
Heater to cathode voltage (Uk/f)≤ 90 V
Internal Resistance (Ri)11 kΩ
Item Diameter22 mm
Item Height56.3 mm
Plate Current (Ia)10 mA
Plate Dissipation (Wa)≤ 2.5 W
Plate Voltage (Ua)≤ 300 V, 250 V typical
Transconductance (S)5.5 mA/V
Packaging Information
Packaging Dimensions1 in. × 1 in. × 2.5 in.
Weight (Packaging)Gold versionT-12AT7-GOLD-JJ0.03 lbs.
Regular versionT-12AT7-JJ0.029 lbs.
Product Measurements by Item
T-12AT7-JJ - Regular versionBody Height49.2 mm
Cathode Current (Ik)≤ 15 mA
Filament Current (If)300 / 150 mA
Filament Voltage (Uf)6.3 / 12.6 V
Gain (μ)60
Grid Circuit Resistance (Rg)1 MΩ
Grid Voltage (Ug)≥ -50 V, -2 V typical
Heater to cathode voltage (Uk/f)≤ 90 V
Internal Resistance (Ri)11 kΩ
Item Diameter22 mm
Item Height56.3 mm
Plate Current (Ia)10 mA
Plate Dissipation (Wa)≤ 2.5 W
Plate Voltage (Ua)≤ 300 V, 250 V typical
Transconductance (S)5.5 mA/V
T-12AT7-GOLD-JJ - Gold versionBody Height49.2 mm
Cathode Current (Ik)≤ 15 mA
Filament Current (If)300 / 150 mA
Filament Voltage (Uf)6.3 / 12.6 V
Gain (μ)60
Grid Circuit Resistance (Rg)1 MΩ
Grid Voltage (Ug)≥ -50 V, -2 V typical
Heater to cathode voltage (Uk/f)≤ 90 V
Internal Resistance (Ri)11 kΩ
Item Diameter22 mm
Item Height56.3 mm
Plate Current (Ia)10 mA
Plate Dissipation (Wa)≤ 2.5 W
Plate Voltage (Ua)≤ 300 V, 250 V typical
Transconductance (S)5.5 mA/V

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Product Reviews

4.70 out of 5 based on 20 reviews
- May 6th, 2021
1 out of 5

One tube good. One bad! You selling junk now!

- July 31st, 2020
5 out of 5

I used these for cathode followers in an SVT-style bass amp I designed. They do exactly what I need them to: supply a huge, immaculate signal to the power section. I prefer JJs to Chinese or Russian tubes; they seem better and more consistently built.

- June 13th, 2020
5 out of 5

The people at AES are always helpful and informative!!!
I am resurrecting my 1966 Fender Princeton Reverb amp.
The reverb was a little weak and so I replaced the 12AT7 and BINGO the reverb was back
and strong as ever!!!
Thank you all!

- April 6th, 2020
5 out of 5

Great tubes, sound great, last a long time

- March 4th, 2020
5 out of 5

I'm rebuilding a 1973 Fender Quadreverb and decided to try some tube options. this JJ ECC81 is doing great. like everyone else I shop around to find a good deal and Antique Electronic Supply usually is where I wind up.

- September 2nd, 2019
5 out of 5

great tube

- March 21st, 2019
5 out of 5

ordered set of tubes for resto of a 1956 Zenith am/fm...all NOS -EXCEPT the 12AT7 which was Slovokian 'manuf. This new tube was DEF...produced loud HUM when inserted in radio..suspect cathode leakage...PLUS the tube is HUGE..and barely fits between the 2 ifs..Ive asked for a replacement tube,,,and specified NOS if possible .

- October 9th, 2018
5 out of 5

tubes worked ok on old ac voltmeter

- October 2nd, 2018
5 out of 5

I use this tube for more gain in my Leslie speaker cabinet. This goes in the place of 12au7 tube,and this is what I use it for.

- October 2nd, 2018
5 out of 5

I use this tube for more gain in my Leslie speaker cabinet. This goes in the place of 12au7 tube,and did is what I use it for.

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.