Since 1993 Copyright Notice
ECC83 NOS TUBES
PART1) General overview of ECC83 types. (You are already here)
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EUROPE |
USA |
Russian |
Versions of ECC83. Sure not all versions. |
NOTE: Many of the special versions have their part number abused by others, building inferior tubes, using part numbers of premium tubes. If you don 't care ECC803S is only stamped on the outside, but mainly the inside has to be low cost, buy Electro Harmonix or JJ, because offer you you just this. But don 't look for ECC803S and expect these always the same. The only part number which is always the same is ECC83. With all premium tubes, the PART NUMBER SHOULD BE RELATED TO THE BRAND, and then you make no mistakes. However, if you want 'ECC803S ' and do not look at the brand, you can get something inferior. The most crazy example is, the TESLA E83CC = identical to TFK ECC803S, but TESLA ECC803S = identical to Philips ECC83 long plate. However, with ECC83 part numbers, the efforts to 'impress ' you with nice part numbers are very many. Yet some extremely beautiful tubes can be found if you look carefully. Like Valvo-E283CC, or TESLA-E83CC. |
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ECC83 |
12AX7 |
6L13 seen in East Europe. |
Generic Part Number. Next generation product after 6SL7 |
| . | . | 6N2P |
This is a version of ECC83 with pin out of ECC88. So it has an electrical shield, works only on 6.3V, and has different pin connections. For the rest it is equivalent. |
E283CC Secret Tip |
. | . | Version of ECC803S, with electrical shield. It has different pin connections a ECC803S, it works only on 6.3V, and no gold pins. For the rest it is fully equivalent to TFK ECC803S :) Best is Valvo. This is a real and true alternative to Telefunken ECC803S. |
| . | 12BZ7 |
. | This tube must be seen as 2x 12AX7 in parallel. So take two 12AX7 tubes, parallel them pin by pin, and there you have your 12BZ7. That describes it best. Picture here. |
| . | 12AD7 |
. | Low microphonics version by Sylvania |
| . | 12DT7, 12DM7, 12DF7 |
. | Low microphonics version, Westinghouse or some others. |
| . | 12AX7A |
. | A= Can be used for circuits that have all filaments serialized. So it has tighter selection on the filament current, and will digest a switch-on surge like in TV 's when they light up brightly from the inside when you switch them on. |
| . | 12AX7WA |
. | W= military. |
ECC803S TFK E83CC TESLA |
. . |
. | Telefunken ECC803S and TESLA E83CC are the reference on this planet. Absolutely unreplaceable products. The letter 'S ' some say it means 'Selected '. They just say it. This shows best the complete misunderstanding of the Telefunken 'S ' series. You can increase quality by selecting, but you can not jump over your shadow by this. Quality is something which comes from the inside. Lifetime results from the fabulous cathodes, having extreme low noise, and minimum 10k hours life time. Initial specifications result from tight mechanical tolerance. Before quoting the 10 page datasheet, you should read it from 4tubes.com, and compare it against any other so called 'better ' ECC83 whatever the copy cats invent for it. With data sheets fitting on 2 pages. How little understanding there is about this, can be seen when Russian tubes from Reflektor in Saratow, are sold in golden boxes under old brand names. Wow, it sounds so great, buying ECC803S for a fraction of the Telefunken price, in even nicer boxes. But read their downgraded datasheets, and compare it to the original data sheet, and it will be clear to you, these come not even near to the real ones. Now I have no problem with such tubes, a good 12AX7 can always be used, but I have a problem with ECC803S printed on it. .
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| . | 5751 |
. | Almost the same as ECC83. 5751 is lower noise, and slightly lower gain. Will replace ECC83 in most audio applications. |
| . | 6681 |
. | SQ tube, with 10.000 hours |
| . | 7729 |
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| . | 7025 |
. | From RCA handbook: 'For High Fidelity Audio applications critical to low noise and hum ' Best ECC83 you can get. Unfortunately extremely rare. Only thing better is TFK ECC803S and historical (not JJ) TESLA E83CC. Also this tube is subject to what I call part number faking, by new made 'so called ' 7025 that are none. |
| . | 7729 |
. | Low microphonics tube by CBS. Gold pin version |
| . | 7058 |
. | Not pin compatible ECC83, because it has no center tap on the heater. So only for 12.6 Volt products. |
| . | JAN-5751 |
. | JAN= 'Joint Army Navy '. This is an 5751 with lot testing testing done. |
EC808 |
. | 6KX8 |
Typical Studio version of ECC83. Secret tip, even TFK can be found NOS. It has a different pin connection. One pin is used for shield. Plate power only 2*0.5Watt. |
CV492 |
. | . | Standard ECC83, but English military P/N. |
CV4004 |
. | . | English military order code for ECC83 |
M8137 |
. | . | These were made only by Mullard. Ultimate ECC83 when they have boxed 'Mullard ' plates. |
| . | . | 6N2P |
Most excellent Russian version of ECC83, but different pin connection. |
| NOS Situation: Not good. In the +20 years we are in this business, we only had three times the possibility to buy NOS in quantities, and this was not recently. Demand for good ECC83 stays high for phono stages, and supply has always been low. So we believe NOS prices for good USA or EU brands will soar well over 100...150 Euro in the next years. (We write this in 2013). With any 'high price ' predictions, this usually comes true for the BEST versions, BEST brands, etc. You can recognize those, as they are already expensive now. Probably the types that are still cheap, will stay in that range, but special attention you should have for undiscovered types, and such types that have apparently 'good supply ' but that is only one company that happens to have 1000 pcs or so, and you see many Ebay sellers, all buy from this source. After the source is dry, prices will suddenly soar. Also read here, and scroll to the Lemming Effect. | |||
Special attention needed: This tube exist as normal grid tube and as frame grid tube. The frame grids have generally better parameter stability, lower noise and lower hum. These are the later technology, and also a technology only very few could make. Frame grid wires can be as thin as 10um, which is technologically speaking a masterpiece of fine mechanics. The frame grid wire is so thin, when you open up a defective tube, you cannot see it with the bare eye. To give you an idea, the size of a large bacteria is 5um. When frame grid tubes, we write it in the description. |
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So to my opinion, REAL ECC803S is definitely not made anymore. If you can afford it, use TFK ECC803S TFK and TESLA E83CC. All others are poor imitations.
PART1) Back to general overview of ECC83 types.
PART2) Tubes for sale. (You are already here)
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 Attention: This is an export Price List, valid for companies in the European Community with a VAT Identification number, and for companies or private persons outside the European Community. Inside Europe, please ask for a quote, including VAT tax.
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The anode has some similarity with M8137, also boxed, but this is not M8137. They are marked CV4004 which is the military grade version of ECC83, used by the UK army. Matched pairs possible. Though we have a small stock, these are actually very rare as NOS. |
NOS |
Yes |
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E83CC. Siemens. Triple Mica! These tubes were purchased very long ago, by a company who developed circuits for Experience Electronics, in Germany. The owner of Experience Electronics unfortunately passed away, and the company was dismantled as I was told. The developer had since retired. At the workshop during closure, this forgotten lot of these wonderfull tubes popped up. The production date is 1960's or before, because they have the older Siemens&Halske logo, which is also in the small (etched) printing. Read more about it. |
NOS |
Stock |
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E83CC. VALVO. The ultimate Valvo tube, only topped by the red series. (This is the white series). These are Amplitrex tested-
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NOS |
2 |
135 |
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ECC83. 'Roehrenwerke Anna Seghers, Neuhaus'. This was a DDR German company with a (very rare) export licence for RFT tubes. These tubes were only available bulk packed. As a logo was the 'N' of the city Neuhaus printed on the tubes. These ECC83 are 1968 production. These are +50 years old, and all test like new right out of the box. They have beautiful getter quality, and perfect appearance.
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NOS |
stock |
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| EGRO branded, with red EGRO box. I seems a Philips tube to me. | NOS |
1 |
35 |
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EI Yugoslavia. Tube factory is closed now. Article here about the closure. These have the same anti microphonic construction as Siemens E83CC. Picture here. Original Box. Gray smooth plates, same appearance as Siemens. Price is for ONE tube. |
NOS |
12 |
38
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EI Yugoslavia. Tube factory is closed now. Article here about the closure. Original Box. WHITE smooth plates. Matched Pair with L3-3 tube tester. These have the same anti microphonic construction as Siemens E83CC. Picture here. Original Box. Plate current and transconductance data is with each tube. Price is for a matched PAIR. |
NOS |
12 |
95 |
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| HALTRON England . Original box. | NOS |
66 |
60 |
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LTT- LORENZ. Tubes in mint condition. Original blue yellow boxes, with control number (309,410) which is printed on the tube and on the box. They have fully identical constructions inside, and long ribbed plates. |
NOS |
2 |
75,- one. (But only sell the pair) |
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ITT- LORENZ. Tubes in mint condition. Original blue yellow boxes, with control number 204. Same looks as above tubes, but printed ITT LORENZ. |
NOS |
3 |
65,-
One |
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Lorenz ECC83 |
Philips. Original, military box, with many information printed on it, like date code., lot number, etc. | NOS |
stock |
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Philips ECG ECC83 |
Philips ECG. Very nice green printing. Original box. Mint quality items. | NOS |
stock |
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General Electric 5751 |
General Electric. Very nice green printing. Original box. Mint quality items. | NOS |
1stock |
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RSD ECC83 |
RSD. 1993 date code. DOUBLE MICA. | NOS |
1 |
22,- |
Siemens ECC83 |
Siemens. Original orange boxes. Test very strong. | NOS |
11 |
55,- |
Telefunken ECC83 |
Almost unused, matched Pair with complete, printed test report. Tubes test same as new. Price is for a pair. Test reports A3 and A5. Ribbed plates. | Used |
1 Pair |
180 |
Telefunken ECC83 |
Almost unused, matched Pair with complete, printed test report. Tube test same as new. Price is for one tube. Test reports A4. Ribbed plates. | Used |
1 Single |
90 |
Telefunken ECC83 |
Used, matched Pair with complete, printed test report. Tubes test "good". Price is for a pair.Test reports A6 and A7. Ribbed plates. | Like new |
1 Pair |
95 |
Telefunken ECC83 |
NOS. With complete, printed test report. WIth Telefunken box, but box is a reprint. Price is for one tube. Test report A1. Ribbed plates. | NOS |
1 Single |
130 |
Telefunken ECC83 |
Used. With complete, printed test report. Price is for one. Test reports A2. Ribbed plates. | Used |
1 Single |
40 |
| SECRET TIP!
Year of build: Approximately 1960 's. On the tubes are date codes, which can be translated by data code overview, TESLA ECC83S = TELEFUNKEN ECC803S. Telefunken ECC803S and TESLA E83CC are the only two NOS FRAME GRID 'ECC83' types. There are no other. New Old Stock is only available from TESLA. Theoretical also from Telefunken, but TFK ECC803S is practically not for sale in a normal way. . TESLA E83CC is identical to Telefunken ECC803S, with only difference, the TESLA has no gold pins. For the rest these are IDENTICAL. I think this is the best 'ECC83 ' you can buy on this planet! This tube is made by TESLA, on the original Telefunken machines, when they were still new, and materials and chemicals were identical at that time. We sell the pairs balanced and matched, which is easy to do, as they all test the same anyway. This is pure quality! If a pair has fully identical data for each tube, it happens. Send as balanced + matched pairs. These have PRAGUE factory code '32' on them, plus date code, plus the sought after 'Yellow Sword ' for extra quality. Please note, we have those here in original factory 100pcs bulk packs, that we were the first to open!!! We ship them in new boxes. AS LONG AS STOCK LASTS. This will be going to an end. It was a unique buying opportunity, we do not get those anymore. Compare it with Telefunken ECC803S here(1) and here(2). You can see, internal construction is identical.
Click here for a movie about first time opening those boxes. This is the dream of all NOS tube buyers. |
NOS |
Stock |
See normal |
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TESLA ECC803S |
WARNING FOR FAKE TESLA ECC803S. Click here |
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These are NOS USA made, 12AX7WA. Just for you interest. These were in a large supply of NOS tubes, I bought from somebody who went out of business, and I bought the whole lot at a fixed price. And then, at unpacking, I found these in the lot. Nicely re boxed in original (!) Telefunken boxes. So the only thing that is original is the box. As you see, it happens to me also. I was pointed out by somebody, they also appeared on an auction website already for 750 Euro each. Sorry, but this is NOT me! Branding and boxing is done very well. So yes there fakes, but they are still very nice, and they are NOS. Test values for both Gm and plate current are excellent, and data is with the tubes, on a removable sticker. Test data of the tubes is absoluetely PERFECT, NOS. The tubes inside, are USA made. Probably Sylvania. |
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8 |
95 |
ECC83. VALVO. These are Amplitrex tested, and data written on a removable sticker. The small print factory information as pictures is for one of them. They all have the triangle sign in that etch code. Please no guarantee for detail hunters for shape of whatever piece parts, or etch code. Pictures are for just one of them, but they look all the same to me. Market prices of those are rising sharply at the moment. |
NOS |
7 |
99 |
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| ECC808. Telefunken. Perfect quality tubes, made in Germany. Printing is a little bit fainted. Very good boxes. ECC808 is comparable to ECC83, but with extra shield connection, and 6Volt heater only, and very low power (0.5Watt dissipation only). Obviously a very small signal tube, and so it is low noise. Often found in pre amp stages of Studio equipment of the 1960 's. | NOS |
2 |
70 |
One of he finest ECC83, from the United Kingdom. It has a boxed anode, and what some collectors call 'old coin base '. 
TESLA ECC803S is a good tube, but not a frame grid tube.
