Buy jj ecc82 12au7 vacuum tubes online, in stock and ready to ship. Just curious as to what the sonic character of the long plates might be compared to the ecc82. Jj ecc82s versus ecc802s tubes canuck audio mart hifi. Somebody told me that 8381s are interchangeable but 83 and 82 are not. Thanks to its design it also peforms with very low noise and microphonics. The bass is great, brings the midrange forward with great vocals i know this because i have fostex th900s which are definitively midrange recessed and the. While there are several applications designed specifically for. The jj is probably the best all around tube of the bunch. Ecc83s is 12ax7 high gain preamplifying double triode. Ua 300 v wa 2,5 w ik 15 ma ug 50 v ukf 90 v rg 1 m. Guys, have quite expensive vintage amps and to increase headroom of input stage i want to put ecc82 tube instead of schematics 83.
Otl headphone amplifier with ecc82 12au7 elektor magazine. My pre came stock with a set of the jj ecc82s gold pin 12au7. Warranty information and return policy warranty period. The ecc81 also makes an excellent phase splitter in modern audio applications. Jj ecc803 discussion in amps and cabs started by mvd18969, sep 22, 2008. A good choice for phase inverters and reverb circuits calling for 12at7 tubes. Jj electronics 12au7 ecc82 preamp vacuum tube guitar center. The jj electronic 12au7 ecc82 is a medium gain dual triode built with the quality and reliability that weve come to expect from a jj tube. These jj electronics ecc82 12au7 were the very first tubes i purchased and to date the only ones. When reading the data sheet, first thing you see is. Tube depot carries a selection of 12au7 ecc82 cv4003 5814a pre amp vacuum tubes.
In this application the oscillator triode would be the first to cease working. I tried ecc81, does a good job, but need less gain for sure. Utilizing jjs short plate structure design, you get one low gain triode 12au7ecc82 spec, and one high gain triode 12ax7ecc83 spec in the same bottle. The gold pin jj ecc83s is designed to be a premium version of the legendary jj ecc83s. I see there is a ecc802s gold pin version that has long plates. When you look at them you cant help but think that they must be rugged and good for the musician on the road. Preamp tube descriptions vacuum tubes by jj electronic. Ecc82 is 12au7 medium gain preamplifying double triode. The jj ecc83s 12ax7 is perhaps the most consistently high gain of all 12ax7s. This 12au7 offers smooth tones and clear definition which is why its no surprise that this tube is often found in hifi equipment as well as guitar amplifiers. Harmonically rich, with a detailed low end and a warm high end. U a 250 v u g 8,5 v i a 10,5 ma s 2,2 mav r i 7,7 k. The ecc802 tube type is equivalent to the north american 12au7 tube and can be used in any 12au7 or ecc82 circuit.
Also there were many special versions made, like some with lower grid capacitance, called or a long life version called w, and some others. Utilizing jj s short plate structure design, you get one low gain triode 12au7 ecc82 spec, and one high gain triode 12ax7ecc83 spec in the same bottle. Noval uf 6,312,6 v if 300150 ma typical characteristics. Price includes vat and second class post in the uk. The reissue genalex gold lion ecc82 b749 12au7 tube features gold plated pins and has been carefully engineered to recreate all of the attributes of the original. The 12au7 and its variants are a miniature ninepin b9a base mediumgain dual triode. Double triode quick reference data anode current ia10,5ma transcoductance s2,2mav amplification 17 heating heating is indirect by ac od dc, with serial or parallel supply. Omitting the output transformer, avoiding overall negative feedback and using good coupling capacitors guarantees a highly linear frequency characteristic, while certain construction methods yield low channel crosstalk. Jj ecc82 12au7 datasheet pdf download adobe acrobat pdf reader. The 5814a is a militaryindustrial grade 12au7 with low noise and highreliability spec. The jj ecc83 has darker sound characteristics and great for metal and hard rock. The jj ecc82 is a good solid reliable valve that gives a good rich sound. The jj ecc832 is a faithful reproduction of the classic 12dw7.
It was used as a frequency changer in five station television sets. The gold pin tubes are a bit smoother in the high end and a bit richer in harmonic content so they are an excellent v1 tube of great in hifi amps. All 12at7 ecc81 6201 cv4024 12au7 ecc82 cv4003 5814 12ax7 ecc83 cv4004 5751 6922 6dj8 7308 pcc88 6sl7. Noval u f 6,3 or 12,6 v i f 300 or 150 ma typical characteristic. Designed as audio and general purpose triodes, two independent valves exist in the envelope. Provides a very smooth sound with welldefined tones suitable for audio and guitar amplifiers. The long and short of it is that these tubes saved my amplifier and made it usable. Double triode ecc81 is 12at7 medium gain preamplifying double triode. A headphone amplifier with outstanding sound quality can be built using readily available modern components.
This tube sports a different plate design than found in most 12ax7s. Valves use high voltages and these voltages are dangerous. This tube is a premium replacement for all 12au7, ecc82, 5814, and 6189 tube types. Ecc82 double triode components datasheet pdf data sheet free from datasheet data sheet search for. While there are several applications designed specifically for these tubes. The jj ecc83s tube has several improvements in its construction from the old ecc83 version. An amplification factor of 17 is quoted, which is much lower than that for the pin compatible ecc83 at 100. Ecc82 12au7jj tesla jj tesla the jj tesla ecc82 follows the same frame grid anode design as the jj ecc83s. Jj electronic vacuum tubes, capacitors, amplifiers. Twin triode ecc802s is a long plated 12au7 medium gain preamplifying double triode. Jj electronic ecc82 gold pin 12au7 our observations.
As of 2012 the 12au7 continued to be manufactured in russia, slovakia jj electronic, and china. Each half is sensibly equivalent to one ec90 triode. The internal bracing and solid frame grid style construction this makes it very. My pre came stock with a set of the jj ecc82 s gold pin 12au7. A customer reported that the jj ecc802s tube is very warm and rich with a golden glow in voices.
Also popular for hifi applications that want the lowest noise possible. In a former pre amp they were much preferable to an expensive pair of telefunkens i. The ecc81 tube type is equivalent to the north american 12at7 tube and can be used in any 12at7 or ecc81 circuit. There are some small differences, but most of the tube data is close. The jj tesla ecc82 follows the same frame grid anode design as the jj ecc83s. Anders sieht es moglicherweise in hfschaltungen wie dem genannten grundig 4040w3d aus. Jj ecc81 and ecc82 preamp tubes new in the box not used. There are many equivalent tubes with different names, some identical, some designed for ruggedness, long life, or other characteristics. My personal favourite vintage ecc82 well 12au7 is the american rca clear top. Shop for the jj electronics 12au7 ecc82 preamp vacuum tube and receive free shipping on your order and the guaranteed lowest price.