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 |
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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
Competitive price, quick delivery, good quality. Both tubes passed testing on a Hickok 600A.
Brought my Vox Night Train back to life and sounding better than ever. Back to recording with my favorite amp!
You don’t have to buy the most expensive tube to make you amplifier sound good.
Good sounding for the price
Great preamp tube at a great price and fast shipping!!!
The tube seem to be working the way they are supposed to. I'm still not getting any sound so the capacitors are next.
The Tubes arrived safe and measured Perfect for their value and installed and they sound and work GREAT!! Thank you; ya'll are the best.
Ricky
Good selection of tubes at reasonable prices, very fast shipping. A great source for my amp building needs, Thanks!
best price around.
J&J is my first choice in vacuum tubes for guitar and audio amps. Antique Electronics offers excellent range of products and has great customer service