12AX7 Tung-Sol Preamp Tubes
Tung Sol 12AX7 ECC83 5751 7025
SKU code: 12ax7ts
Tung-Sol 12AX7 / ECC83 Preamp Vacuum Tube
The ultimate standard-series 12AX7 – delivering big, warm vintage tone, high gain, ultra-low microphonics, and dynamic 3D audio depth.
Tung-Sol 12AX7 ECC83 – High Gain, Low Noise & 3D Soundstage
The Tung-Sol 12AX7 (ECC83) reissue is widely recognized as one of the best high-gain preamp valves on the market today. Famous for its big, warm sound signature and musical midrange, this tube combines linear performance with ultra-low microphonics. Whether you are seeking punchy overdrive in guitar amps or clean resolution in Hi-Fi audio systems, the Tung-Sol 12AX7 provides exceptional 3D sound projection.
Operating as a high-mu dual triode (12.6V @ 150mA in series or 6.3V @ 300mA in parallel), this 9-pin miniature tube is an ideal replacement in input stages, phase inverters, or vibrato circuits. If you are selecting the right tube for your amplifier’s V1 position, the Tung-Sol 12AX7 is a top recommendation for adding warmth and articulation.
Is the Tung-Sol 12AX7 Right for Your Setup?
Finding the perfect tone depends on your amp, guitar, pick-ups, and play style. Tube swapping (or "tube rolling") allows you to customize your amp's gain staging and EQ profile without permanent modifications. To see how Tung-Sol compares to other top manufacturers, explore our detailed guide on the differences between 12AX7 tubes or read about the 12AX7 Family.
Looking for maximum pin conductivity? We also carry the premium Tung-Sol ECC803S Gold Pin edition.
Technical Specifications & Physical Dimensions:
- Base Type: Standard 9-Pin Miniature (B9A / Noval)
- Glass Width: 22.0 mm
- Glass Envelope Height: 49.2 mm
- Overall Height (Pin Tip to Glass Top): 55.5 mm
- Filament Powering: 12.6V @ 150mA (Series) / 6.3V @ 300mA (Parallel)
- Applications: V1 Input Stages, Gain Stages, Phase Inverters, Hi-Fi Phonostages, and Studio Preamps
Key Features:
- High-Gain Output: Drives preamp channels into smooth, rich saturation without losing note separation.
- Ultra-Low Microphonics: Sturdy internal grid architecture resists vibration in high-volume combo amplifiers.
- Linear Frequency Response: Provides deep bass response, sweet highs, and clear midrange detail.
- Universal Replacement: Direct drop-in substitute for any 12AX7, ECC83, 7025, or 5751 tube socket.
Fast Australian Shipping from Evatco
At Evatco Australia, we carry the world's most trusted valve brands in stock and ready to ship. Orders placed before 12:00 PM (Brisbane time) on business days are dispatched the same day, with typical metro delivery in 1–2 days. Upgrade your amplifier tone today with authentic Tung-Sol tubes!
| SKU | 12ax7ts |
| Brand | Tung Sol |
| Shipping Weight | 0.1010kg |
| Shipping Width | 0.050m |
| Shipping Height | 0.050m |
| Shipping Length | 0.090m |
| Shipping Cubic | 0.000225000m3 |
| Unit Of Measure | ea |
| Assembled Length | 0.070m |
| Assembled Height | 0.020m |
| Assembled Width | 0.020m |
Tung Sol for my Messa Boogie
31 March 2021I was apprehensive changing the original tubes that came with my Messa, that is the Messa 12AX7 or the recommended upgrade SPAX7-A to using the Tung Sol 12AX7 ECC83 but i am adventurous and changed to the Tung Sol. As a lead guitarist, we are always looking for that sound on a note that would be unique and it is the reason I took to mix and match my tubes to achieve that sound I'm looking for in a note. This Tung Sol tube has given me a sound on some notes I really like playing more than others to be really more meaningful and cut through the rest to be heard and feel good. I am happy i took the step to change tubes in search for that slight novel note sound. I'm going to give this Tung Sole a four star rating as I would do for any tube because there will is always be another sound from another tube that I may also like.
(4)
Good Low and High
12 August 2018In my experience, this have very good low and good high...mids are ok as well but I find GoldLion gold pins to have better mid compare to this one. Recommended.
(5)
