Vacuum Tube - 12AY7, JJ Electronics
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.
|Capacitance, Grid to Filament||1.6 pF|
|Capacitance, Plate||0.33 pF|
|Capacitance, grid to plate||1.7 pF|
|Cathode Current (Ik)||≤ 10 mA|
|Filament Current (If)||300 / 150 mA|
|Filament Voltage (Uf)||6.3 / 12.6 V|
|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 Dimensions||2.5 in. × 1 in. × 1 in.|
|Weight (Packaging)||0.03 lbs.|
|Specification Sheet||All Models|
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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.
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.
What can i say? JJ tubes are great buy for the money, and are extremely consistant..
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.
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 articulate...to a fault. If there's a bug in your circuit...you'll hear it. Just the way it should be. Great job JJ...you made me a believer.
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.
Great tube, my amp now has much more headroom.
I put it in a Black Face (Bassman but for guitar)amp to soften the punch a little, and smooth the distortion. I lost a little bit of power, but it is power I don't need so much these days. I get to turn it up a little louder and get more overdrive character at lower volumes.