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: $12.95
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.

SKU:
T-12AT7-JJ-X
Item ID:
004428
Brand:
JJ Electronics
RoHS Compliant
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

4.68 out of 5 based on 22 reviews
- November 16th, 2021
5 out of 5

Keep one on hand for inventory. Some repairs lately have needed to dial down the gain a bit from a full-on 12a--X--7.

- September 12th, 2021
4 out of 5

I have been a satisfied customer for years. However, this time, I ordered two tubes in case one happened to be bad. Both tested bad when I got them. Four stars for previous orders.

- 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

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.