Its rugged design and rich harmonics make this tube an obvious choice for musicians who need a reliable and high quality tube at a reasonable price. Many amp manufacturers fit these as original equipment. The 5814a is a militaryindustrial grade 12au7 with low noise and high. The electro harmonix 6v6 is warm sounding, with a sweet sustain and crunchy overdrive, making it a very musical tube. Type 12ax7 is a commercial equivalent of the cv492. The electro harmonix el84 power pentode is the perfect replacement for the vox ac30 output tubes. Double triode, ecc82 datasheet, ecc82 circuit, ecc82 data sheet. Unique spiral filament eliminates filament to cathode induced hum common on amplifiers that use ac on the filaments. Vacuum tube 12ax7 ecc83, electroharmonix amplified parts.
Tungsol is a registered trademark with electroharmonix. The electro harmonix 12ax7 is highly recommended for hifi and guitar amp applications. Most of the datasheets are in pdf format and some are links to other html pages. Many oems use relabeled electro harmonix vacuum tubes in their amplifiers. According to 12ax7 datasheet, the 12ax7 is a miniature highmu win triode each section of which has an individual cathcode connection. Due to the combination of low gridplate capacitance and medium gain, it is suited for use in audio voltage amplifier with an extended frequency range. Your other choices are the gt12ax7m mullard copy which is a long plate tube and while a little noiser than some others it. Tube depot carries a selection of 12ax7 ecc83 7025 cv4004 pre amp vacuum tubes. Electroharmonix el34 power tube el34eh electroharmonix. Electroharmonix 12ax7 ecc83 preamp vacuum tubes three. One other note about the construction of these electro harmonix 12ax7 tubes is they have filaments that are almost completely encased in the plate structure. Latest version with support rods to reduce microphonics.
Electro harmonix tubes are quite simply the absolute best. You can use acrobat for viewing and printing pdf files. The electro harmonix 12au7ecc82 is a premium quality low gain preamp tube that is great for low noise applications. If you want great sounding tubes at a very reasonable price, then electro harmonix tubes should be on your l el34eh. It is a premium quality 12au7 tube built to match the performance of the militaryindustrial original ge 6189 tube. Etc2, alldatasheet, datasheet, datasheet search site for electronic components and. It provides detailed, musical tone that rivals the most desirable nos types tube socket noval. This tube is great for the driver position in amplifiers and provides an excellent and detailed soundstage that is impressive. Electroharmonix tubes are quite simply the absolute best. If you want great tubes at a reasonable price, then our tubes and tube accessories should be on your list. Next time you need to retube, insist on tubes from electroharmonix. The electro harmonix 12ax7 has a u nique spiral filament which eliminates filament to cathode induced hum common on amplifiers that use ac on the filaments. Printer friendly version of this page compare similar items. It is designed on the vintage short plate 14mm anode design but uses a 22mm glass envelope to help reduce microphonics.
Today, it is by far the most common preamp tube used for electric guitar amplification and there is an almost overwhelming supply of current production options to choose from. The electroharmonix is oem in most current guitar amplifiers. Ecc83 datasheet pdf as of update the 12ax7 was made in various versions by two factories in russia winged c, formerly svetlana, and new sensorwhich produces tubes under the sovtek, electro harmonix, svetlana, tungsoland other brands for which the firm has acquired trademark rightsone in china shuguangand one in datasheeg jj electronicfor a. Vacuum tube 12ax7 ecc83, jj electronics amplified parts.
The 12ax7 is the american part number for the ecc83. The balanced tone of the jj 12ax7 works well in any amp. Along the way i also tried electro harmonix 12ax7s harsh, like the sovteks, groove tubes better, but not as good as jjs. Electroharmonix is one of the largest tube manufacturers in the world.
The electro harmonix 12ax7 is a standard tube that can be used for a variety of applications, but i use these for my guitar amplifier. Electro harmonix 6h30pi datasheet pdf datasheet catalog. Vacuum tube 12au7a ecc82, electroharmonix amplified parts. Due to its rugged construction and conservative ratings, it is the most reliable current production el84 type available for use in vox ac30 type amplifiers.
The 12ax7 is especially suited for use in resistancecoupled voltage amplifiers, phase inverters, multivibrators, and numerous industrialcontrol circuits where high voltage gain is desierd. The tungsol el846bq5 was a popular oem tube for americanmade el846bq5 guitar amplifiers, such as those built by gibson and harmony. The electro harmonix 12au7a ecc82 is a brand new preamp tube that is made in russia. The electro harmonix is oem in most current guitar amplifiers. Tubes free delivery possible on eligible purchases. Electro harmonix tubes are all new designs and are of excellent quality. Our new ehx strings electro harmonix electric guitar strings are customdesigned to our specifications and made in the usa by a. I then replaced the sovtek el84 power tubes with jj el84s and the tone. For hifi purposes, you must use the normal ones, of what i get supplied.
The electroharmonix 12ax7 is definitely a good choice for your amp. Block diagram, pinout and 6h30pi circuit application inside. Vacuum tube 12ax7 ecc83, electroharmonix image 1 vacuum tube. If you want great sounding tubes at a very reasonable price, then electroharmonix tubes should be on your l el34eh. Ecc83 datasheet pdf as of update the 12ax7 was made in various versions by two factories in russia winged c, formerly svetlana, and new sensorwhich produces tubes under the sovtek, electroharmonix, svetlana, tungsoland other brands for which the firm has acquired trademark rightsone in china shuguangand one in datasheeg jj electronicfor a. Ecc82 datasheetpdf list of unclassifed manufacturers. Due to the method of production in regards to the glass, measurements may vary slightly.
The electro harmonix el84 power pentode is the perfect replacement for the vox ac30 output tubes also recommended output tube replacement for peavey classic 30 and fender blues junior. The 12ax7 is a highgain typical amplification factorlowplatecurrent triode best suited for lowlevel audio voltage amplification. We design and manufacture our tubes, engineered for demanding high. Glad i made this purchase, you cant go wrong w any of electro harmonix products electro harmonix 12ax7 tubes is they have filaments that are almost completely encased in the plate structure.
The electro harmonix ecc82 12au7 gold pin is made in russia and provides a rich, warm and well balanced sound. Jj ecc83 s 12ax7 datasheet pdf download adobe acrobat pdf reader. In european usage specialquality valves of some sort were often indicated by exchanging letters and digits in the name. It was released for public sale under the 12ax7 identifier on september 15, retrieved from s.
The 12ax7 was originally intended as replacement for. It was released for public sale under the 12ax7 identifier on september 15, 1947. This is the electro harmonixs 6h30pi twin triode tube. It was developed around 1946 by rca engineers in camden, new jersey, under developmental number a4522. Electroharmonix tubes are all new designs and are of excellent quality. The eh 12au7 replaced the v3 reverb driver 12at7 in my blackface super reverb with hammond tank. Warranty information and return policy warranty period. Mar 19, 2020 as of dtaasheet the 12ax7 was made in various versions by two factories in russia winged c, formerly svetlana, and new sensorwhich produces tubes under the sovtek, electro harmonix, svetlana, tungsoland other brands for which the firm has acquired trademark rightsone in china shuguangand one in slovakia jj electronicfor a datsheet annual. They make this tube with slightly different data on purpose, to get a special kind of distortion, in amplifiers for electric guitar, which their chief engineer jc morrison refereed to me as brown sound. Manufacturing quality is good, internal structures are usual but for the coil spring support for the filament wires. The electro harmonix 12ax7 ecc83 is a hi gain preamp tube that produces the right. Rca and sylvania first introduced the 12ax7 to the world in the late 1940s. Electroharmonix 12ax7 is a quality replacement for 7025.
Also recommended output tube replacement for peavey classic 30 and fender blues junior. The jj electronic 12ax7 ecc83 has quickly become a modern classic in preamp tubes. Jan 03, 2020 ecc83 datasheet pdf as of update the 12ax7 was made in various versions by two factories in russia winged c, formerly svetlana, and new sensorwhich produces tubes under the sovtek, electroharmonix, svetlana, tungsoland other brands for which the firm has acquired trademark rightsone in china shuguangand one in datasheeg jj electronicfor a. The 12ax7eh is a dual high mu triode with a spiral filament and special construction to minimize microphonic behavior. Many oems use relabeled electroharmonix vacuum tubes in their amplifiers. The model of the 12ax7 is a popular tube these days because it is cheap and gets the job done pretty well. Matched pair of 12ax7 preamp vacuum tubes also ecc83, 7025 high gain preamplifier tube with ultra low noise and detailed, musical tone. The electroharmonix 6v6 is warm sounding, with a sweet sustain and crunchy overdrive, making it a very musical tube.
High gain, ultralow microphonics, and superb linearity with a dynamic 3d sound. Electro harmonix b power triode tube with gold pinsmade in russiapremium version of the b eh with gold harnonix wire for increased bias stability as well as top of the line sonics and harmonnix. Absolute sound quality of a tube itself isnt critical in this position so expensive nos isnt a must, its just a matter of degree of drive gain, how that makes the reverb tank sound both tonally and in terms of sproingyness, and how it affects the useful setting range of the reverb control knob. Most of these datasheets are in english except where noted otherwise. Electro harmonix 5501 2nd street long island city, ny 11101. The plain strings are made from the same high carbon steel as the hex cores. They are a good blend of tone, reliability and price. The 12ax7 was originally intended as replacement for the 6sl7 family of dualtriode amplifier tubes for. Electroharmonix, svetlana, tungsoland other brands for which the firm has acquired trademark rightsone in china shuguangand one in slovakia jj electronicfor a datsheet annual production estimated at two million units.
The electro harmonix 12ax7 is definitely a good choice for your amp. These valves give a very rich tone and are sonically sweet. Buy electroharmonix 12ax7 ecc83 preamp vacuum tubes three pack. It is manufactured in russia and is a very durable valve. Each wound string is precision wrapped with round nickelplated steel onto a high carbon, hexagonshaped steel core. View pdf brochure for 12ax7 ecc83 electro harmonix twin triode. Our new ehx strings electro harmonix electric guitar strings are customdesigned to our specifications and made in the usa by a premiere string manufacturer. Eric is correct that the 12ax7eh electro harmonix is the same as the gt12ax7r, however the gt is guaranteed for 6 months as all their tube are. Lecc83, 7025 ou 12ax7, est une petite double triode a fort gain en tension. Our new ehx strings electroharmonix electric guitar strings are customdesigned to our specifications and made in the usa by a premiere string manufacturer.
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