Vacuum Tube - 12AU7 / ECC82, JJ Electronics

Vacuum Tube - 12AU7 / ECC82, JJ Electronics

JJ Electronics
Pictured: Regular
Pictured: Regular
Pictured: Regular
Pictured: Regular
Pictured: Gold
Pictured: Gold
Pictured: Regular
Pictured: Regular
Pictured: Gold
Pictured: Gold
Customer image:<br/>"12AU7 on the modulator board in my Heathkit HW-101."
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Pictured: RegularPictured: RegularPictured: GoldPictured: RegularPictured: Gold
Customer Images:
Customer image: "12AU7 on the modulator board in my Heathkit HW-101."
Starting at: $12.95
In Stock

The JJ Electronic 12AU7 / ECC82 is a medium gain dual triode built with the quality and reliability that we’ve come to expect from a JJ tube. This 12AU7 offers smooth tones and clear definition which is why it’s no surprise that this tube is often found in hifi equipment as well as guitar amplifiers.

SKU:
T-12AU7-JJ-X
Item ID:
004437
Brand:
JJ Electronics
RoHS Compliant
Part Numbers
Pin TypeOur Part NumberUPC/EANJJ Electronics Part Number
GoldT-12AU7-GOLD-JJ609722123488 ECC82 / 12AU7 - GOLD
RegularT-12AU7-JJ844632022074 ECC82 - 12AU7
Product Measurements by Type
Body Height49.2 mm
Cathode Current (Ik)≤ 20 mA
Filament Current (If)300 / 150 mA
Filament Voltage (Uf)6.3 / 12.6 V
Gain (μ)17
Grid Voltage (Ug)≥ -50 V, -8.5 V typical
Heater to cathode resistance (Rk/f)150 kΩ
Heater to cathode voltage (Uk/f)≤ 180 V
Internal Resistance (Ri)7.7 kΩ
Item Diameter22.2 mm
Item Height56.3 mm
Plate Current (Ia)10.5 mA
Plate Dissipation (Wa)≤ 2.75 W
Plate Voltage (Ua)≤ 300 V, 250 V typical
Transconductance (S)2.2 mA/V
Packaging Information
Packaging Dimensions1 in. × 1 in. × 2.5 in.
Weight (Packaging)Gold versionT-12AU7-GOLD-JJ0.03 lbs.
Regular versionT-12AU7-JJ0.029 lbs.
Product Measurements by Item
T-12AU7-JJ - Regular versionBody Height49.2 mm
Cathode Current (Ik)≤ 20 mA
Filament Current (If)300 / 150 mA
Filament Voltage (Uf)6.3 / 12.6 V
Gain (μ)17
Grid Voltage (Ug)≥ -50 V, -8.5 V typical
Heater to cathode resistance (Rk/f)150 kΩ
Heater to cathode voltage (Uk/f)≤ 180 V
Internal Resistance (Ri)7.7 kΩ
Item Diameter22.2 mm
Item Height56.3 mm
Plate Current (Ia)10.5 mA
Plate Dissipation (Wa)≤ 2.75 W
Plate Voltage (Ua)≤ 300 V, 250 V typical
Transconductance (S)2.2 mA/V
T-12AU7-GOLD-JJ - Gold versionBody Height49.2 mm
Cathode Current (Ik)≤ 20 mA
Filament Current (If)300 / 150 mA
Filament Voltage (Uf)6.3 / 12.6 V
Gain (μ)17
Grid Voltage (Ug)≥ -50 V, -8.5 V typical
Heater to cathode resistance (Rk/f)150 kΩ
Heater to cathode voltage (Uk/f)≤ 180 V
Internal Resistance (Ri)7.7 kΩ
Item Diameter22.2 mm
Item Height56.3 mm
Plate Current (Ia)10.5 mA
Plate Dissipation (Wa)≤ 2.75 W
Plate Voltage (Ua)≤ 300 V, 250 V typical
Transconductance (S)2.2 mA/V

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Specifications, Files, and Documents

PDF: Specification Sheet Specification Sheet475.22 KB

Questions and Answers

Click each question to see its answers.
Asked by Anonymous on August 4th, 2016.
Matt H.
August 5th, 2016
Staff Member
Yes, a 12AX7 and a 12AU7 are interchangeable. In fact, all of the following tubes work where a 12AX7 would go: 5751, 12AT7, 12AY7 and 12AU7. The 12AX7 will have the most gain and the 12AU7 will have least amount gain.
Asked by Anonymous on November 18th, 2016.
Matt H.
November 18th, 2016
Staff Member
Hi, we do not match preamp tubes at this time.
Asked by Anonymous on April 6th, 2017.
Matt H.
April 6th, 2017
Staff Member
It is hard for us to say what is the highest quality 12AU7 as tone is subjective. The JJ is the most popular 12AU7 we carry.

Product Reviews

5.00 out of 5 based on 14 reviews
- February 21st, 2021
5 out of 5

Works fine, just what I needed.

- February 4th, 2021
5 out of 5

I used these to replace the 12AU7s in my two Heathkit WA-P2 preamps. They work great and sound fine. Old tubes were probably original and the signal was unbalanced between the two channels, now much better.

- March 5th, 2020
5 out of 5

I am using these tubes in Heathkit and other old VTVM's that use same. I've purchased two so far and they work fine.

- February 20th, 2019
5 out of 5

I knew what they were before purchasing them. Not sure if this will help anyone, because I use the pre-amp valves in 2 Behringer vt999 overdrive pedals to help my Fender champion 40 amp work more like a tube amp. I run one on flat settings then into the other that I control when needed. The low gain tubes keeps the signal cleaner and give the amp warmth without overdriving early. Usually I keep the gain control on zero, & control the gain by the knob on the amp itself. It isn't a tube amp but the 2 pedals working together helps fool many in thinking it is.

- December 20th, 2018
5 out of 5

Not one of the three tubes I bought from you passed when tested in my tube checker. I am very disappointed. I wish you would screen your tubes before selling them to the public. I'd be willing to pay more if I could trust them to be good. It is now holding up a very important amplifier repair.

- March 4th, 2016
5 out of 5

I wanted to try this 12AU7 in V1 just to see what it sounded like. It really sounded smooth but you do loose some volume.

- October 16th, 2015
5 out of 5

Worked very good.

- July 12th, 2015
5 out of 5

Fast delivery and they work perfectly for my Hammarlund HQ-180 receiver.

- June 15th, 2015
5 out of 5

Received as advertised

- April 14th, 2015
5 out of 5

I plugged this tube into its socket and played my guitar. I floated away into space and it was great until I realized I was in a vacuum just like inside the tube and then I was like dude inception and then I was happy.

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.