Vacuum Tube - 12AY7, JJ Electronics

Vacuum Tube - 12AY7, JJ Electronics

JJ Electronics
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The JJ Electronic 12AY7 is a low microphonic tube built in the same rugged fashion as all JJ preamp tubes. This tube offers the classic warm 12AY7 sound with rich and balanced harmonics when pushed enough to break up. It’s a great choice for authentic tweed tones but can also help clean up amps when used in place of a 12AX7. Additionally, the JJ 12AY7 is a great replacement in 6072 microphones.

Item ID:
JJ Electronics
RoHS Compliant
Capacitance, Grid to Filament1.6 pF
Capacitance, Plate0.33 pF
Capacitance, grid to plate1.7 pF
Cathode Current (Ik)≤ 10 mA
Filament Current (If)300 / 150 mA
Filament Voltage (Uf)6.3 / 12.6 V
Gain (μ)40
Grid Voltage (Ug)≥ -50 V, -4 V typical
Heater to Cathode Voltage (Uk/f)≤ 90 V
Internal Resistance (Ri)22.8 kΩ
Plate Current (Ia)3.0 mA
Plate Dissipation (Wa)≤ 1.5 W
Plate Voltage (Ua)≤ 300 V, 250 V typical
Transconductance (S)1.75 mA/V
Packaging Information
Packaging Dimensions2.5 in. × 1 in. × 1 in.
Weight (Packaging)0.03 lbs.

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Specifications, Files, and Documents

PDF: Specification Sheet Specification Sheet399.15 KB
Questions? Contact us at [email protected], or give us a call at 480-820-5411

Product Reviews

4.85 out of 5 based on 13 reviews
lawrence crisafi - February 12th, 2024
3 out of 5

tube is noisy

J Frame - September 5th, 2023
5 out of 5

Tube went right where the 12AX7 was. Lower gain, more headroom. I'm happy.

ieales - April 20th, 2023
5 out of 5

A perfect fit for my triamp system with a bit more gain than the 12AU7 and a bit less than the 12AT7.

The individual triodes are well matched as are the tubes when used with both triodes in parallel as input driver.

Combined with the JJ ECC802 S / 12AU7 and Apex Matched KT88 quads, the system has never sounded better. Imaging in rock solid. Dynamics are best ever. Air and sound stage superb.

Robert M - February 26th, 2023
5 out of 5

I purchased these tubes not really knowing what to expect. I sure glad that I did. After adjusting some resistor values and installing the tubes, my stereo sounds much more lively than ever before.

1952Greg - February 25th, 2023
5 out of 5

What can i say? JJ tubes are great buy for the money, and are extremely consistant..

tom colopy - September 13th, 2022
5 out of 5


Charles Roland - September 10th, 2022
5 out of 5


Robertbruce scallon - July 24th, 2022
5 out of 5

Just what I needed to have the sound I wanted.
A lot more mellow than a 12ax7.very bluesy sound
These jj 12ay7 tubes are perfect.

Chris Johnson - February 8th, 2022
5 out of 5

I had an application requiring for which the 12AY7 was ideally suited. I auditioned a couple NOS GE 6072a's and RCA's from the late 50's and was quite pleased. For a kick, I tried the current production JJ...and, well...let's just say, I've recalibrated my opinion regarding current production vacuum tubes. These things are fantastic. They're deathly silent (first priority for a 'Y7) and a fault. If there's a bug in your'll hear it. Just the way it should be. Great job made me a believer.

Allen3k - 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.