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Sylvania 12AX7- Vintage Tube
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wilda85
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$50.00
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This vintage Sylvania 12AX7 tube is a great addition to any audio enthusiast's collection. With its classic design and reliable performance, this tube is sure to bring a warm, rich sound to your vintage audio setup. The brand, SYLVANIA, is known for producing high-quality tubes that last for years. This model, 12AX7, is a popular choice for use in vintage audio and video equipment. Its easy-to-use socket and compatibility with a variety of devices make it a versatile choice for any collector. Add this vintage tube to your collection today and experience the rich, warm sound it brings to your audio setup.
- Buy It NowSylvania 12AX7- Vintage Tube
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About this product
Product Information
Sylvania first began manufacturing vacuum tubes in the 1930s. These tubes were used in the early ham radios, home radios, amplifiers, and prototype electric instruments. The 12AX7 Sylvania tubes are known for their long plates. The long plates allow for improved microphonics and support crisp and clear radio transmissions. Because of the extended length of the plates, this tube is able to act as an amplifier. The plate allows the 12AX7 to amplify sounds and noise by as much as 100 times. This increase in plate length allows older radios to deliver a greater level of sound even without a separate amplifier. The longer gray plates also minimize harmonic distortion of the sounds coming from vintage audio equipment. The plate in these matched tube sets measures about 1.1 inches long and 0.05 inches in thickness. This 12AX7 Sylvania tube also features a pair of copper grid posts. This pair of posts connects the plate to the screen grid. With the pair of copper posts, more electrons are able to flow toward the cathode and power the acoustic system. The anode voltage is about 250 volts. The anode's current is about 1.2 mA. The rare Sylvania 12AX7 stock vacuum tube is utilized for transmitting audio. It is ideal for the replacement of JAN Sylvania 12AX7WA in vintage equipment. It also delivers an accurate sound for today's modern Hi-Fi radios and musical instrument amplifiers. This rare product also has a halo or D getter. The D getter provides the tube with low-level voltage amplification for radio frequencies. Some musicians and audiophiles like to stock up on these rarities for backups. The Sylvania 12AX7 stock tube is built upon a dual triode network. The dual triode consists of the high-value plate resistor, which has an impedance of 100,000 ohms. These products also have a cathode resistor that is designed to provide grid bias. The grid bias is important for optimizing the timing and directional flow of electrons. When the resistor is bypassed, this unit has a voltage gain of about 60 volts. Its amplification of noise almost doubles the voltage gain and helps make it an excellent amp for use in early to mid-20th-century equipment. You’ll enjoy the good quality of sound that these Sylvania 12AX7 tubes produce when used to restore old RCA console televisions. Additionally, these vintage matched tubes are also ideal for use in RCA and Mullard radios and communication devices from the 1930s to the early 1980s. This is because they can be wired in series or in parallel. This flexibility makes these products ideal for a variety of equipment manufacturers. They are used as stock replacement units in RCA and Mullard phone systems. RCA, Siemens, and Mullard also used them in some early computers. These products are designed to emit a low level of noise while they are in use. This is because they are heated indirectly and produce minimal vibration. The minimal amount of noise means that you hear the radio frequency that is tuned. The low-frequency amplification allows you to focus on the good music rather than a static or humming noise. The tube measures 2.2 inches tall and 0.8 inches in diameter.Product Identifiers
BrandSYLVANIA
Model12AX7
eBay Product ID (ePID)168137360
Additional Product Features
Type12AX7
All listings for this product
Ratings and Reviews
Most relevant reviews
- Nov 08, 2015
Sylvania 12AX7 long gray plate
Great sounding tube with extremely low noise floor. As soon as I put it in my matamp GT120, I noticed the background popping and hissing noises it previously made had completely disappeared. Relatively flat frequency response, with even amounts of bass, mids and treble. Great sounding when overdriven as well, though not as 'sparkly' (or fizzy) as other tubes in the upper registers but I generally prefer a flatter sounding tube to one that has too much top end gain.Verified purchase: Yes
- Jan 31, 2017
No school like the old school.
I replaced the factory china tubes in my 2015 Vox AC 15 with these. Literally like taking a thick pillow off he front of the amp. The new sound is AMAZING! Pony up the dough for a set of vintage tubes for your amp and you will not only believe the hype, but be wondering why on earth you waited so long to do it. They truly do not make them like this anymore so get em while you can. Rock on!Verified purchase: Yes
- Apr 17, 2016
You just gotta hear these things
I am using these in a Dynaco ST-70 Stereo Amplifier that was originally equipped with EL-34s. I had tried many different EL-34s, some quite good indeed, but all were lacking the transparency I crave. I finally decided to try a quad of Made in America GE 6L6GCs. Biasing was a breeze. So what did they sound like? The difference in transparency was immediately obvious. And down the road ? In the two months I have been listening with these tubes I have heard detail as never before and listening fatigue is a thing of the past.Verified purchase: Yes
- Feb 13, 2017
Great value, great tubes
They sound great in my AC30C2. I've got these two in my v1, v2, a JJ Gold Pin Balanced in v3, and a quad of JJ's in the power section. Pretty significant upgrade from the stock tubes. Great shipping as well. Very Happy.Verified purchase: Yes
- Feb 10, 2016
highly desirable preamp tube
the roar, the twang and the grit of the american sound, together with the musicality, the precision and the balance of the best european gears. For V1 position in any kind of tube amp.Verified purchase: Yes
- Feb 09, 2016
Sylvania 12AX7
This Is an excellent tube. Very close to NOS. It is great sounding.Verified purchase: Yes
- Mar 27, 2017
easy on the ears and amazing separation of sounds
Verified purchase: Yes
- Mar 05, 2017
NOS Tubes
Great product from 1969, still new in box. They sound phenomenal in my modified Vox AC15C1.Verified purchase: YesCondition: Pre-owned
- Oct 27, 2015
Amp-in-Case restoration
Went into a Silvertone 1457 restoration. The amp sounds better than it did "back in the day" using this tube and another like it.Verified purchase: Yes
- Apr 13, 2016
Microphonic tubes
At least one of the tubes has a microphonic hum to it almost from the beginning in my DAC. Not happy with the purchase. Still, proper testing should have revealed it.Verified purchase: Yes
