Vacuum Tube - 12AX7 / ECC83, JJ Electronics
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.
Accessory Items:
Pin Type | Our Part Number | UPC/EAN | JJ Electronics Part Number |
---|---|---|---|
Gold | T-12AX7-GOLD-JJ | 797734820959 | ECC83S / 12AX7, 7025 - GOLD |
Regular | T-12AX7-S-JJ | 844632022081 | ECC83S - 12AX7, 7025 |
Body Height | 49.2 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 Diameter | 22 mm | ||
Item Height | 56.3 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 Dimensions | 1 in. × 1 in. × 2.5 in. | ||
Weight (Packaging) | 0.0287 lbs. |
T-12AX7-S-JJ - Regular version | Body Height | 49.2 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 Diameter | 22 mm | |
Item Height | 56.3 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 version | Body Height | 49.2 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 Diameter | 22 mm | |
Item Height | 56.3 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 |
Specification Sheet for Regular | T-12AX7-S-JJ |
Specification Sheet for Gold | T-12AX7-GOLD-JJ |
My Project Lists
Specifications, Files, and Documents
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.
Product Reviews
Very quick delivery,good product.
Love the JJ Tubes. Amplified Parts shipped them quickly and I received them in just a few days!
Very popular pre amp tube! Purchased for my late 1989 SWR SM 400. Amp played well with an old Ruby Tube, but this brought back some of that SWR sound. No noise from this tube what-so-ever. Very happy with this purchase!
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.
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!!!
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.
Seems to work well.
These tubes were inexpensive, but completely worth it- my amp is back to its old self. Plenty of kick!
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.
The most reliable and sonically solid preamp tube on the market!