12AT7 / ECC81 / CV4024 / CV455 / A2900 / B739 / ECC801S
Scroll to bottom of page for 12AT7 reference data
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All prices are per tube
amperex 12AT7 6679
$25.00This Amperex branded 6679 was made in in eastern europe and is an excellent value in the 12AT7 tube category. Far exceeding thquality of any 12at7 tube being made today.
6679=12AT7
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All prices are per tube
CBS Raytheon 7728
$250.00The 7728 is a premium low noise 12AT7 with heavy gold plated pins. These were made in the 1960's by both CBS and Raytheon for highly critical industrial applications. On par with the Valvo E81CC, it is incredibly rare and has an extremely open soundstage.
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All prices are per tube
Electro Harmonix 12AT7 / ECC81
$23.99Electro Harmonix 12at7 Ecc81 Nice older stock/branded for Fender, new unused in Fender boxes. Suitable as a replacement for any 12AT7 / ECC81 / CV4024 / CV455 / A2900 / B739 / ECC801S Dual Triode Vacuum Tube. Special price of just $23.99 each, while supplies last!
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All prices are per tube
Ferrowatt 12AT7 ecc81
$40.00This Ferrowatt branded 12AT7 was most likely made in eastern europe with a solid disc getter. Excellent construction and quality, and has balanced section so it is recommended for use in phase inverter positions or DACS.
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All prices are per tube
GE 12AT7WC/6201
$33.99GE JAN 12AT7WC/6201 (actually etched on glass as a 6201) Excellent Quality, extra heavy duty support rods, mil-spec construction! Low price! Sale Price: $33.99 .
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All prices are per tube
GE 6201
$35.00The GE 6201 is a special quality and equivalent to the 12AT7WA Dual Triode. These have excellent clarity and are a great value!
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All prices are per tube
GEC A2900 Balanced Sections
$299.99These A2900 are branded Marconi and were made by the MO Valve Company in England. They all have balanced sections (do not select balanced sections when checking out as the only stock we have remaining have balanced sections.)It has wide, flat black plates and an amazing huge soundstage! These are the biggest and boldest sounding tube in the 12AT7 category, and are extremely low noise and low in microphonics.
$299.99 per tube. Limited supply.
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All prices are per tube
JJ 12AT7 / ECC81
$22.99JJ 12at7 Ecc81 These are an excellent value in new production tube, and suitable as a replacement for any 12AT7 / ECC81 / CV4024 / CV455 / A2900 / B739 / ECC801S Dual Triode Vacuum Tube. Special price of just $22.99 each, while supplies last!
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All prices are per tube
Ken Rad 12AT7
$59.99The Ken Rad 12AT7 is an extremely rare find. These were made in the USA by the Kentucky Radio company with black plates and D getters, prior to the GE buyout of Ken Rad. Some of the oldest 12AT7 we have in stock. Amazing fidelity and quality, made if the Golden Era of tube manufacturing in the USA.
12AT7 / ECC81 / CV4024 / CV455 / A2900 / B739 / ECC801S Dual Triode Vacuum Tubes
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All prices are per tube
Sale!
Mullard CV4024
The CV4024 / M8162 is a special quality version of the ecc81 / 12AT7. Heater is center tapped to permit operation in series at 12.6V or parallel at 6.3V. These amazing tubes were designed for long life and are shock resistant up to 500g. They were also made to withstand bulb temperatures up to 200 deg C. The anode is made of pressed sheet as normal, the box is closed on all four sides. The anode box is 2 mm deep 5 mm wide and 11 mm high. This is significantly smaller than the commercial ECC81.
These are an excellent value and sound amazing in both Hifi systems as well as guitar amp reverb tubes or when used in the phase inverter position. Normally $79.99 each, now on sale for just $49.99!
$79.99$49.99 -
All prices are per tube
Philips E81CC
$175.00These E81CC gold pin tubes were made by Valvo in Western Germany and are Philips/Amperex branded. Special screening was used to select them for audio use and low noise, and they have a 10,000 hour heater. These are incredibly detailed, and highly recommended. Extremely balanced nice sound with lively mids and very nice, tight bass.
This is a suitable replacement for any 12AT7 tube type. Various brands available.
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All prices are per tube
Philips JAN 12AT7WC
$24.99Philips JAN 12AT7WC Excellent Quality,made by Philips ECG (Sylvania), mil-spec construction! Low price! Sale Price: $24.99 .
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All prices are per tube
Raytheon National 6414 12AT7
$39.99The 6414 is 1/2 inch taller than a standard 12AT7 and is a useful great sounding sub for a 12at7, 5965, or a 7062. These are Triple Mica, grey plate construction with D-getters. They were mistakenly branded 12AT7 by the National/Richardson company. Highly recommended for Singlepower Extreme headphone amplifier.
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All prices are per tube
RCA 12AT7
$49.99RCA 12AT7. This is an excellent choice for Fender amplifiers for both the reverb driver/gain recovery stage and the phase inverter positions. Excellent clarity and longevity.
12AT7 / ECC81 / CV4024 / CV455 / A2900 / B739 / ECC801S Dual Triode Vacuum Tubes
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All prices are per tube
RCA 6201
$74.99The RCA 6201 is one of the best sounding 12AT7 variants around! Excellent detail and recommended for Fender guitar amps!
6201=12AT7WA Dual Triode
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All prices are per tube
RFT 12AT7
$27.50RFT E German 6060 B309 These are an excellent value and an amazing 12at7 tube. Extremely low noise and low microphonic construction, they far surpass any 12at7 which is currently being made today. Various brandings available.
12AT7 / ECC81 / CV4024 / CV455 / A2900 / B739 / ECC801S Dual Triode Vacuum Tubes
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All prices are per tube
Siemens E81CC ecc801s
$175.00NOS Siemens ECC801s/E81CC Triple Mica. These are extremely neutral with a clean open clarity. Extremely low soundstage and transparent. We can provide extremely tight matching and noise screening for critical recording and Hifi applications Highly recommended for:
David Berning Quadrature Z amp
JC Morrison custom phono
Atma-sphere preamp
This is a suitable replacement for any 12AT7 tube type. Various brands available.
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All prices are per tube
Sylvania 12AT7
$59.99Sylvania 12at7wa Triple Mica 1950's NOS in original boxes (branded as Sylvania or CEI etc) Just $59.99 per tube. 12AT7 / ECC81 / CV4024 / CV455 / A2900 / B739 / ECC801S Dual Triode Vacuum Tubes
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All prices are per tube
Sylvania 6201 Gold Pin
$75.00The Sylvania Gold Brand 6201 is a special quality 12at7 variant, which has gold plated pins. They have excellent detail and are a perfect match for hifi systems or guitar amplifiers.
6201=12AT7WA Dual Triode
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All prices are per tube
Telefunken 12AT7 ecc81
$100.00The Telefunken 12AT7 is renowned for its amazing fidelity, speed, and accuracy. Clear high end extension and accurate bass reproduction. Highly recommended for DACS and line stages.
This is a suitable replacement for any 12AT7 tube type. Various brands available.
12AT7 Vacuum Tube Reference Information
12AT7: high-frequency dual triode 9-pin miniature glass vacuum tube with a mu factor of 60, the higher gain 12AX7 has a factor of 100, whereas 12AU7, is only 20 in comparison. Similar pin connections with other 12A_7 types, but usually not interchangeable. The 12AT7 is used in many hi-fi applications, as each triode operates as a class A amplifier. Low noise, making them a great for hifi, guitar amplifier, and other audio applications.
ECC81: European designation of the 12AT7. On par with RCA blackplate or other USA made military/industrial versions. Often rebranded european versions were made for USA hi-fi products in the 1960s (Knight, Bogen, Daystrom, Dynascan, etc.) These are all excellent sounding tubes made by Mullard, Amperex or Telefunken. The rarest are the 1950s versions of Mullard and Amperex with a "D" shaped top getter often rival the scarce A2900 (see below).
E81CC or ECC801S: Extremely rare! These are usually found only in the Telefunken or Siemens or Philips Valvo brand. Special screening was used to select them for audio use and low noise, and many have a 10,000 hour heater. The ECC801S Telefunken is the rarest, and the E81CC only a little more common. Both are excellent, low noise, finely crafted tubes. Very rare and sound amazing!
E180CC or 7062: Almost always made by Amperex or Philips, it is basically the same as a 5965 and has the added advantage of a 10,000 hour heater life to make it another audiophile gem! Musical and smooth, and actually sound better than many standard 12AT7. The pinched waist version is quite rare. This particular tube is constructed about a half-inch taller than the standard 12AT7, so please measure your chassis to make sure they fit.
CV455 and CV4024 and M8162: UK military designations from the 1950's, 1960s and early 1970s for special quality 12AT7 tube variants. Mullard, Brimar, and some GEC are available. Often these will have both the military and commercial numbers on them. These are all ruggedized, and have that sweet rich British tube sound which sounds great in reverb units. The majority of the Mullard tubes which were made for the military were made at the Mitcham, UK factory.
GEC A2900: Rarer than Rare! A2900 is in the "Gold Monarch" series by Genalex. Genalex GEC and Marconi-Osram Company in England made these. It has wide, flat black plates and a huge soundstage! Audiophile quality, tightly controlled noise specs, designed with audio listening in mind. Very scarce! Rarer than hen's teeth. Did we say these were RARE?
12AT7: This is the USA made version of the 12AT7. Almost all have wing shaped plates. Earlier versions have black carbonized plates, with later versions have greyplates. Most have top getters, which are square or D shaped. USA made vacuum tubes are great 12AT7's, and some of the best(like the RCA blackplates) are as good or better than the military and industrial versions. Selected versions were made by large manufacturers like RCA, GE and Sylvania, are usually branded with the OEM product they were selected for. For example, organ brands are found with Baldwin, Wurlitzer, and Conn labels. Sometimes McIntosh hi-fi and Fender guitar amps had select tubes made for them. Often the tips of tubes produced for medical or test equipment are painted indicating they have been screened for low noise!
12AT7WA: Military version of the 12AT7, and the military number is a 6201. Some tubes may have both type numbers silk screened on them. The thickness of the mica spacers is usually greater and the filaments are ruggedized. RCA versions have extra support posts, small "12AX7" type plates, and are almost always black. These are great for Fender amps as a reverb driver as they are very low in microphonics.
6201: Usually appears along with 12AT7WA designation (military version) on the same vacuum tube. However, some tube makers made a the commercial versions of a 6201 as an "industrial" 12AT7. Sylvania made a 6201 in their Gold Brand line, and it came in gold boxes, gold silk screen on the glass, and most had gold plated pins. Amperex's PQ version of the 6201, also known as a E81CC with gold pins usually made in Germany by Valvo or Philips in Holland. Earlier USA made 6201 as well as the european made 6201 vacuum tubes, often have an extra mica spacer on top. These are also known as "triple mica", and are usually very quiet and well suited for hifi audio applications. Overall, the 6201 is a huge upgrade over a standard 12AT7, and were designed to meet military specs with critical applications.
6211: A less commonly known tube, this is a class A amplifier twin triode with medium mu; lower gain than the typical 12AT7, even lower than even the 5965 (see below). It usually has larger, flat plates with diamond shaped points at the corners bent inwards. This construction adds rigidity to the plate structure. This 6211 tube is slightly lower in plate voltage and current ratings, but is still very usable in hi-fi stereos.Often used in preamp circuits with lower gain, lower microphonics, and mellow sound. Somewhat uncommon but this medium-mu tube sounds very good in place of the standard 12AT7. Great for making the gain on a guitar amp more usable or eliminating harshness in your stereo system.
5965: An industrial tube with a mu of 47 compared to 60 of a 12AT7. Low noise and lower gain and can be used in a similar way like using a 5751 in place of a 12AX7. GE, RCA and other USA manufacturers made very nice versions of this tube. Some are "triple mica" and noted for lower microphonics. Telefunken also made a version of this tube with long plates which are rare.
6829: An industrial grade tube that is similar to the 5965. It has a mu factor of 47 so it is slightly lower than the typical 12AT7 and is rich, detailed, warm, and very quiet, low in microphonics. The GE version ( 5-star and military line) are a rugged and long lasting. Half-inch taller than the 12AT7, like the E180CC listed above.
6679: Super high quality 12AT7 often with gold pins and were designed for mobile communications use. It maintains output levels even when filament voltage varies. Somewhat rare and they work great in hi-fi use.
7728: SUPER RARE! High-end industrial tube made by CBS or Hytron (same factory made both) with gold pins sometimes rebranded as Raytheon.
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