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12AX7 / ECC83 Tube Types
The 12AX7 (ECC83) vacuum tube was invented almost 70 years ago and is still an absolute necessity for every electric guitar tube amp and a wide range of hifi audio tube amplifiers. Another common name for the 12AX7 tube is ECC83 and for premium versions the 7025 and ECC803 audio tubes. Originally, the 12AX7 / ECC83 vacuum tube was introduced to be a superior option for lower noise and microphonics over the 6SL7 tube that was commonly used in the 1940s. As well it offered more gain. Today, a look at almost any guitar tube amp, be it Fender, Marshall, Vox, or any other, will prove the 12AX7 / ECC83 / 7025 tubes are here to stay.
We have a large selection of 12AX7 / ECC83 / 7025 audio tubes in stock. Below you'll find tubes by Tung-Sol, Mullard, Preferred Series, Sovtek, Electro Harmonix, Genalex/Gold Lion, Tube Amp Doctor (TAD), JJ Electronic, Northern Electric, GE, and more. You can check out our 12AX7 / ECC83 / 7025 tube reviews page for more information regarding the sound qualities of these tubes. These reviews will be a great help in narrowing down the options for your needs. Also, many of the 12AX7, ECC83, and 7025 tubes listed below have customer tube reviews. You will also notice we indicate the Top-Sellers for the 12AX7 audio tube.
If you need to tweak the gain level of your preamp you will want to see our Preamp Tube Gain Factor page for some great insight.
Be sure to click the “Additional Info” tab when viewing a specific 12AX7 / ECC83 / 7025 tube. There you will find related articles and downloads such as datasheets, pinouts, ratings, and matching information when available. Other excellent links for technical information can be found at 12AX7 in Wikipedia, 12AX7 in Duncan Amps, and 12AX7 in The Tube Directory.
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