Vacuum Tube - 12AX7 / ECC83, JJ Electronics

JJ Electronics
Pictured: Regular
Pictured: Regular
Pictured: Gold
Pictured: Gold
Pictured: Regular
Pictured: Regular
Pictured: Gold
Pictured: Gold
Vacuum Tube - 12AX7 / ECC83, JJ Electronics image 5
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Pictured: RegularPictured: GoldPictured: RegularPictured: GoldVacuum Tube - 12AX7 / ECC83, JJ Electronics image 5
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Customer image: "Perfect for my preamp."

Vacuum Tube - 12AX7 / ECC83, JJ Electronics

Starting at: $18.95
In Stock

The JJ Electronic 12AX7 / ECC83 has quickly become a modern classic in preamp tubes. Its rugged design and rich harmonics make this tube an obvious choice for musicians who need a reliable and high quality tube at a reasonable price.

The balanced tone of the JJ 12AX7 works well in any amp. This versatile tube sounds excellent in clean amps offering an amazing dynamic response while also proving itself in high gain amps with its low noise and noticeably less microphonic issues than other tubes. The warm highs and transparent lows make it a great choice for any position in a tube amp. The JJ 12AX7 is the go-to tube of many amp builders and touring musicians.

SKU:
T-12AX7-JJ-X
Item ID:
004452
Brand:
JJ Electronics
RoHS Compliant
Part Numbers
Pin TypeOur Part NumberUPC/EANJJ Electronics Part Number
GoldT-12AX7-GOLD-JJ797734820959 ECC83S / 12AX7, 7025 - GOLD
RegularT-12AX7-S-JJ844632022081 ECC83S - 12AX7, 7025
Body Height49.2 mm
Cathode Current (Ik)≤ 8 mA
Filament Current (If)300 / 150 mA
Filament Voltage (Uf)6.3 / 12.6 V
Gain (μ)100
Grid Circuit Resistance (Rg)2.2 MΩ
Grid Voltage (Ug)≥ -50 V, -2 V typical
Heater to cathode resistance (Rk/f)150 kΩ
Heater to cathode voltage (Uk/f)≤ 180 V
Internal Resistance (Ri)62.5 kΩ
Item Diameter22 mm
Item Height56.3 mm
Plate Current (Ia)1.2 mA
Plate Dissipation (Wa)≤ 1 W
Plate Voltage (Ua)≤ 300 V, 250 V typical
Transconductance (S)1.6 mA/V
Packaging Information
Packaging Dimensions1 in. × 1 in. × 2.5 in.
Weight (Packaging)0.0287 lbs.
T-12AX7-S-JJ - Regular versionBody Height49.2 mm
Cathode Current (Ik)≤ 8 mA
Filament Current (If)300 / 150 mA
Filament Voltage (Uf)6.3 / 12.6 V
Gain (μ)100
Grid Circuit Resistance (Rg)2.2 MΩ
Grid Voltage (Ug)≥ -50 V, -2 V typical
Heater to cathode resistance (Rk/f)150 kΩ
Heater to cathode voltage (Uk/f)≤ 180 V
Internal Resistance (Ri)62.5 kΩ
Item Diameter22 mm
Item Height56.3 mm
Plate Current (Ia)1.2 mA
Plate Dissipation (Wa)≤ 1 W
Plate Voltage (Ua)≤ 300 V, 250 V typical
Transconductance (S)1.6 mA/V
T-12AX7-GOLD-JJ - Gold versionBody Height49.2 mm
Cathode Current (Ik)≤ 8 mA
Filament Current (If)300 / 150 mA
Filament Voltage (Uf)6.3 / 12.6 V
Gain (μ)100
Grid Circuit Resistance (Rg)2.2 MΩ
Grid Voltage (Ug)≥ -50 V, -2 V typical
Heater to cathode resistance (Rk/f)150 kΩ
Heater to cathode voltage (Uk/f)≤ 180 V
Internal Resistance (Ri)62.5 kΩ
Item Diameter22 mm
Item Height56.3 mm
Plate Current (Ia)1.2 mA
Plate Dissipation (Wa)≤ 1 W
Plate Voltage (Ua)≤ 300 V, 250 V typical
Transconductance (S)1.6 mA/V

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Product Reviews

5.00 out of 5 based on 54 reviews
John Winstanley - May 10th, 2023
5 out of 5

JJ 12AX7 tubes are very consistent in the way they're made. I can count on a nice bright distortion when I drive them and I use them in all my amps.

MickeyMack747 - January 29th, 2023
5 out of 5

These JJ Electronics ECC83 preamp tubes have an excellent tone. They are just as good as the Mesa factory equipment. Amplified parts got these tube to me in 3 days! Ecellent service!!!

Eric Peterson - December 12th, 2022
5 out of 5

The JJ ECC83s is the stock 12AX7-type preamp tube in my Vincent Audio SV-500 integrated stereo amplifier. I had previously rolled all sorts of NOS tubes, Mullard, RFT, Tung-Sol, etc. but turns out the JJ ECC83s sounds best in the SV-500. Nice sounding tube, warm with good sound stage, low noise.

Peter R - December 7th, 2022
5 out of 5

Seems to work well.

Mike. S. - October 9th, 2022
5 out of 5

These tubes were inexpensive, but completely worth it- my amp is back to its old self. Plenty of kick!

Joe Canary - August 21st, 2022
5 out of 5

Great company. Selling bundled and matched complete sets of tubes for a large number of popular amps makes ordering quick and easy. Shipping is very fast.

karl brake - August 11th, 2022
5 out of 5

The most reliable and sonically solid preamp tube on the market!

Dr"D" - December 20th, 2021
5 out of 5

Installed the tubes...............Work/sound great!!!!!!!!!!!!

Larry D - August 28th, 2021
5 out of 5

JJ Tubes are always well made and deliver great tone. Both my amp (vox ac30) and the korg sv1 needed new 12AX7's so I ordered 4 (one as a spare as well.) The stock tubes that were replaced had seen their time come and go with the tube in the pre-amp of the korg blown. While getting into the guts of the keyboard was ridiculous (bad design flaw on Korg's part considering there is a "cute" window to see the tube glowing - you cannot access the tube from the front for an easy fix (enough of that gripe,) once the new JJ tube was installed and the keyboard reassembled, the difference was incredible immediately! With the vox, not so much because I already had JJ's in there for the pre-amp drive. All in all, JJ tubes are fantastic - clean pure tones and powerful delivery! Amplified Parts is a big part of this equation - their tube comparison charts, customer service and product lineup are top notch. Shippng was fast (we needed these in place in 3 days so I opted for 2 day shipping) and we were back up in running right on schedule. Thanks to everyone at Amplified Parts for a job well done!

Chris nashvillerocker DiMella - May 31st, 2021
5 out of 5

The jj83s is an excellent 12ax7 preamp tube, low microphonics, high gain with compression. Use in my Bogner 101b and Fuchs custom Wildcard 100 D style amp in gain channel. Highly recommend this tube.

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.