Pictured: Regular
Pictured: Gold
Pictured: Regular
Pictured: Gold
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Vacuum Tube - 12AX7, Tung-Sol Reissue
Russian made reissue of the original Tung-Sol. The Ultimate 12AX7. Big, warm, and musical. High Gain, ultra-low microphonics, and superb linearity with a dynamic 3-D sound.
- Improved reissue of the Vintage NOS Tung-Sol 12AX7
- Superb linearity with a dynamic 3-D sound
- Preferred by guitar technicians for re-tubing and upgrading, but equally well suited for HiFi applications
- 7025/ECC83 equivalent
| Pin Type | Our Part Number | UPC/EAN |
|---|---|---|
| Gold | T-12AX7-GOLD-TUNG | 841358101786 |
| Regular | T-12AX7-TUNG | 683274020556 |
| Capacitance, grid to plate | 1.7 pF | |
| Capacitance, input | 1.6 pF | |
| Capacitance, output | 0.46 pF / 0.34 pF | |
| Grid Voltage, negative (Ug-) | 50 V | |
| Grid Voltage, positive (Ug+) | 0 V | |
| Heater Current | 150 mA / 300 mA | |
| Heater Voltage | 6.3 V / 12.6 V | |
| Heater to cathode voltage (Uk/f) | 180 V | |
| Plate Dissipation (Wa) | 1 W | |
| Plate Voltage (Ua) | 300 V |
| Packaging Dimensions | Gold version | T-12AX7-GOLD-TUNG | 2.75 in. × 1 in. × 1 in. |
| Regular version | T-12AX7-TUNG | 1.1 in. × 1.1 in. × 2.9 in. | |
| Weight (Packaging) | Gold version | T-12AX7-GOLD-TUNG | 0.035 lbs. |
| Regular version | T-12AX7-TUNG | 0.04 lbs. |
| T-12AX7-TUNG - Regular version | Capacitance, grid to plate | 1.7 pF |
| Capacitance, input | 1.6 pF | |
| Capacitance, output | 0.46 pF / 0.34 pF | |
| Grid Voltage, negative (Ug-) | 50 V | |
| Grid Voltage, positive (Ug+) | 0 V | |
| Heater Current | 150 mA / 300 mA | |
| Heater Voltage | 6.3 V / 12.6 V | |
| Heater to cathode voltage (Uk/f) | 180 V | |
| Plate Dissipation (Wa) | 1 W | |
| Plate Voltage (Ua) | 300 V | |
| T-12AX7-GOLD-TUNG - Gold version | Capacitance, grid to plate | 1.7 pF |
| Capacitance, input | 1.6 pF | |
| Capacitance, output | 0.46 pF / 0.34 pF | |
| Grid Voltage, negative (Ug-) | 50 V | |
| Grid Voltage, positive (Ug+) | 0 V | |
| Heater Current | 150 mA / 300 mA | |
| Heater Voltage | 6.3 V / 12.6 V | |
| Heater to cathode voltage (Uk/f) | 180 V | |
| Plate Dissipation (Wa) | 1 W | |
| Plate Voltage (Ua) | 300 V |
 Specification Sheet for Gold | T-12AX7-GOLD-TUNG |
| Specification Sheet for Regular | T-12AX7-TUNG |
My Project Lists
Specifications, Files, and Documents
Questions and Answers
Click each question to see its answers.
1 answers
So I have a couple of Presonus Studio Channel Mic Preamps and A DBX 376 and a one of those Eurotech dual ch. mic pres. I've heard that the Presonus Tube Ch.s can benefit from replacing the tubes. Are these good for my application?
Asked by Anonymous on August 18th, 2016.
Please see our article on 12AX7's. https://www.amplifiedparts.com/tech_corner/12ax7_comparison_of_current_made_tubes It will rate tubes by gain and noise.
1 answers
Do these come in matched pairs?
Asked by Anonymous on October 13th, 2016.
Some people will match a preamp tube and this is what is typically referred to a "balanced." We do not offer this service. Most of the time is is unnecessary.
1 answers
I am replacing the tube that came with my Pangea headphone amp. it has 12ax7b written on it. will the 12ax7 work for the pangea hp-101?
Asked by Anonymous on October 13th, 2016.
Hi, all 12Ax7's are comparable with each other. This will work just fine.
1 answers
I have a VOX VT20X how will it sound with a Tung Sol 12AX7?
Asked by Anonymous on March 9th, 2017.
The Tung Sol is a very warm and creamy 12AX7 with nice detail. We would suspect that you would get these attributes with the Vox.
1 answers
What is the difference in gain and tone with the ecc83 and ecc803s (gold pin variation of this) and why isn't the gold pin listed as an ecc803s when it is on the box/label?
Asked by Anonymous on May 2nd, 2017.
Both of these Tung Sol 12AX7's are ECC803S. They are very close but the gold pin will have slightly less gain in the mids. The ECC83 is a mid gain tube and will have less gain than a 12AX7 (ECC803S). For a comparison of all the 12AX7's we carry, click on the tech corner link at the top of this page.
1 answers
Looking for breakup at low volume for practice with 1969 Bassman AB165. Would high gain preamp tubes help get there?
Asked by Anonymous on October 21st, 2018.
October 22nd, 2018
Staff Member
Absolutely. High gain preamp tubes combined with low numbered power tubes should provide your amp with earlier access to breakup.
1 answers
Hi everybody, my thought and question is as follows:
Is the Tung Sol 12ax7 gold pin nearly same as the standard Tung Sol 12ax7??
Or is there a small difference in gain or in EQ power??
Asked by Anonymous on October 24th, 2018.
October 24th, 2018
Staff Member
They are very close but the gold pin will have slightly less gain in the mids. The ECC83 is a mid gain tube and will have less gain than a 12AX7 (ECC803S). For a comparison of all the 12AX7's we carry, click on the tech corner link at the top of this page.
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
I compared several 12AX7 tubes. The Tung Sol is pretty good. It's a little hotter and brighter than the Mullard CV4004 which was my favorite.
Tubes arrived quickly and at a good price. The tubes themselves are quiet and give my amp a very smooth sound and attack. I would purchase them again. They sound as good as some more expensive vintage tubes I've used.
Great tubes ,no microphonics and really nice sound .i am very pleased with them .i am running them in fender 65 reissue twin reverb.
Bought 3 to replace microphonic tubes in my Monoprice 15W amp. Sound great and absolutely no hint of microphonics.
I put this in V1 of my Blackstar HT Soloist 60. WOW noticed the 3-D sound they were talking about. Lot more headroom and bottom end on the clean channel, the OD had crunch to sweeping gain with a more pronounced EQ and presence response.Going to get a few more for my other amps.The Tung-sol sounded totally different in V1 then the OEM tubes.
I bought this to replace the stock tube in my behringer VT999. The pedal was useless to me and sounded like a bad fuzz pedal with the original tube. Then I installed the Tung-Sol and I must say the difference is huge. Now it sounds great with plenty of usable tones on tap and sounds more like an overdrive pedal should.
One of my favorite current product preamp tubes for my Peavey Classic 30 and Fender Hot Rod Deluxe amps. Great all around tube. Very musical and fat sound, but can get dirty when it needs to. I tend to use it for the V1 and V2 slots in my amp.
Great Gold pin tubes. Puts new life into my amp. Very very fast shipping. Thanks Amplified parts!
Bought a few of these and love them but unfortunately they have developed bad rattle to them. Switched them out with some good ol' JJ 12AX7 and rattle disappeared. Maybe just a couple bad apples in the batch but think I'm going to stick with the JJs.
Installed these tubes in blues jr Iii along with cannibus Rex speaker. It has increased headroom better dynamics and got rid of thin brittle highs. Everyone I play with noticed right away and could not believe the difference. Will do same mods to my USA bjr and run them both with Aby box.been chasing tone for a long time and finally got what I wanted.