| How these tubes are tested
FAQ Frequently Asked Questions
 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. (Since 2021 we must charge the VAT of the receiving country)
|
Tube |
Date
|
. |
. |
Qty.
|
EURO
|
|
1952 |
3L3 is a 2Watt dissipastion output pentode for battery radios, specified for 0.7 Watt output power. These are the highlight of the art of tube construction. I think nobody can make such tubes anymore today, because they need only 50mA heater current. Same as an LED, but this heats a DIRECTLY heated tube! So better lnearity to begin with because of direct heating. These are real pentodes, so you can strap them triode mode to get a low noise, low impedance tube. Here is a radio circuit showing 82Volt Anode voltagem, and 7mA plate current. Best application: With such low voltage and current, they become totally IDEAL for building a battery heated phono amp or pre amp. Use rechargeable Lithium 18650B cells, with Zener diode +stabilisation, and one cell with run one tube for 24 hours. datasheet here. Pic1 - Pic2. Serialize 10 rechargeble 9V batteries for the Anode, and two tubes will run also 24 hours from those. So a battery operated, totally hum-free pre-amp can be made simple. |
|
100 |
See
price list
for all tubes
(download
from the
menu) |
350B Western Electric |
|
White Box. Mint tube. Base is shiny and clean. Clear, yellow printing, no scratches whatsoever. Appearance is finest as can be. Amplitrex test reports included, with perfect test values. Test Data - Tube curves
General notes: 350B is an special version of 6L6. If you are interested in the difference, there is a great free source of information for this. It's the datasheets. We see there, the 350B curves remind of the 6L6, but they are not the same. The 350B is designed to work at lower voltage, and so it must work at higher current. To make the higher current possible, the heater current of 350B is much higher, thus giving more emission. The 350B heater is 10 Watt, whereas 6L6 has a 5 Watt heater. Also the glow picture of the 350B is very impressing, wow! 10 Watt is a lot of glow.
What may seem so audiophile about the 350B is "the brand" for some users, but in fact we are dealing here with a large improvement of the 6L6. The 6L6 was "the" audio work horse tube for a long time. However, 6L6 emission is a bit low, and curves not so great, but the tube was cheap and good. All WE had to do, is add more emission. This allows the lower working voltage, yet at lower distortion than the 6L6.
Sorry for the price, but recently an unbelievable hunt for those tubes has started. This a truely mint condition NOS one, optical and electrical. So I can't sell it cheap.
| |
Va, Max
Singe Ended |
Heater |
Screen |
Push Pull
Class A1
|
|
| 350B |
360V |
1.6A |
4W |
18Watt
@275Volt |
|
| 6L6 |
375V |
0.9A |
3.5W |
13,8Watt
@255Volt |
|
|
NOS |
1 |
Sorry, this tube was sold.
690,-
|
6AK5 Mullard |
unknown |
The tubes are stamped CV4010 which is the Mullard Designation for this tube. Mint condition, beautifull tubes.
For Yamamoto phono amp, pre amp, or others.
|
NOS |
9 |
28,- |
6AQ5 Tung Sol |
1959 |
Used in Fender guitar amps. |
NOS |
|
12,- |
| 
6L6 Tungsram
Order Number:
125-014-49 | 1970 |
|
NOS |
|
22,- |
6L6 GE |
1960 |
Original box |
NOS |
1 |
35,- |
6L6 Tronal |
1980 |
Very short used by previous owner. Looks and tests like new. Printing not burned. With Original box |
Used |
2 |
15,- for the pair |
| 
6L6 Voskhod
Order Number:
114-052-32
| |
Russian designation is 6P3S. Supervb quality, that I have in originally sealed 50pcs boxes, and each tube is individually boxed. Cylinder glass, old fashioned construction. Extra stabile precision version, with all specs better than normal. Can be used at higher voltage. Tube bias tighter better specified. Wider range for filament voltage, and a lot more.
This tube has a gold screen grid! I have not seen that before. Normally screen grids are graphite coated. Click the next two pictures to see that.
 
|
NOS |
Stock |
See main price list from menu |
| 6SJ7
Hewlett Packard | 1960 |
Another NOS tube that is getting harder to find every year. Electrically equivalent to EF86, but octal based. These Hewlett Packard tubes were intended for their own instruments. Prestine Quality, you have never seen this before. Come out of the boxes like new. |
NOS |
3 |
See main price list from menu |
6SJ7 -VT116
Ken-Rad
|
1944, 1945 |
Excellent tubes, optically new, in original 1945 boxes. |
NOS |
3 |
See main price list from menu |
6SJ7
RCA, GE |
|
|
NOS |
40 |
See main price list from menu |
| 6V6
Reflektor | 1980's |
Lovely made smoked glass 6V6, with hand-blown tube base. So no machine made tube. Printed 6N6c, which is Russian for 6V6, they used other letters. This tube is basically the older octal version of the EL84. Use any EL84 schematic to make your own 6V6 amplifier, but also many 6V6 schematics are around. Why fight over the last remaining pieces of NOS EL84, while you can get this beautiful made version of this NOS 6V6 tube. Original colored boxes. |
NOS |
stock |
See
official
price list |
|
ca 1960 |
Potential HiFi tube |
NOS |
1 |
20,- |
717A
Western Electric |
1944 |
Made by Raytheon, for Western Electric. On the box front is Western Electric, and on the box side and tubes is written Raytheon. |
NOS |
6 |
See Price list
for all products
(download from
the menu)
check under
Yamamoto HiFi |
| 
C3g ITT-Lorenz
Order Number:
114-144-48
| |
C3g, ITT Lorenz
Out of the box came came one the nicest C3g versions I have ever seen, and the Lorenz (Stuttgart, Germany) brand has an excellent reputation. The tubes are individual numbered on the tube top, and have a nice, blue paper roll on it. They come out of the boxes crispy and new, as made just yesterday.
 
|
NOS |
Stock |
See
price list
for all tubes
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from the
menu)
|
VERY IMPORTANT INFORMATION ABOUT C3g
I had an excellent contact who digged up C3g and C3m tubes. He was related to sales of those tubes for many years and so he knew the quantities, and the buyers. He contacting the original buyers, when he was retired. He was lucky several times to find old stock that way. This is why I have all those brands and versions. He told me there is really nothing left to find anymore at OEM customers, not at the post, not at others, just nowhere at all. There were many, on wooden palettes. They greater part of those went to Japan, and I kept a small stock for myself. So what we have for sale here is a depleting stock, and prices may rise. Before stock cleaning of the German Post began in 1995, C3g was more expensive as NOS 2A3. From 1995...2000, 10's of thousands C3g, and C3m were sold for scrap prices by the German post. This may seem many tubes, but it is not. With 20 tubes per person, 10.000 tubes is just 500 persons. Just because they came all at once, this reduced market prices extremely, and people thought C3g was now cheap for ever. So, many HiFi lovers, and companies jumped on this wonderul, yet so cheap tube. As demand rised, no new NOS stocks were found anymore. Related to the price of 40 US$ in 1995, todays prices of C3g should be much higher. All tubes that cost 40$ in 1995 are now worth 2...5x more. So one way or another, I expect this is going to happen to C3g as well. Just wait and you will see. They were going for 14 Euro in 2005, then 25 Euro in 2010, and now as I wrote this in in 2015, 50 Euro. Which is actually just 1995 price level. So prices are expected to rise further in the years to come. |
| 
C3g Siemens
Order Number:
114-146-50 | ca 1965 |
Long Life, finest low noise Audio tube, with gold pins, and individual series number. C3g is a frame grid tube. (unlike C3m). Look at the excellent data it has:
| C3g |
Pentode. connected |
Triode connected |
| Gain |
210 (WIth Ra=15k) |
40 |
| Ri |
300k |
2300 Ohms |
| Ia |
13mA |
17mA |
| Ua |
220V |
200V |
| Ug |
|
-3.9V |
Quantities of 50 pcs are packed in sealed 50pcs boxes. Inside are individual boxed tubes.
Info sheet about C3g-C3gS-C3m
Get a 16 page datasheet from out website, go to techcorner and click to "scanned datasheets".
|
NOS |
Stock |
See
price list
for all tubes
(download
from the
menu) |
C3gS Siemens
Order Number:
114-147-63 |
|
S-Version with selected parameters. The S-Version is more tighter to the datasheet. My measurements have verified this is indeed so.
Info sheet about C3g-C3gS-C3m |
|
|
|
| C3g Valvo Order Number:
114-150-29 | |
|
|
|
|
| C3gS Valvo Order Number:
114-151-93 | |
S-Version with selected parameters. The S-Version is more tighter to the datasheet. My measurements have verified this is indeed so. |
|
|
|
| C3m TFK Order Number:
114-081-39 | . |
One of the BEST (?) low noise audio tube ever made. Ideal phono tube. Low noise like a triode - amplification of a pentode. With very nice TFK Logo engraved on the top.
Info sheet about C3g-C3gS-C3m
Get the 16-page datasheet at our techcorner ( See website menu)
Very special
Mesh tube
inside. |
NOS |
Stock |
|
| 
C3m Siemens
Order Number:
114-010-90
| |
One of the finest low noise audio tubes ever made. Ideal phono tube. Low noise like a triode - amplification of a pentode. Most tubes are in military boxes, with date code, and Siemens order numbers on it, etc.
Info sheet about C3g-C3gS-C3m
Get the 16-page datasheet at our techcorner ( See website menu)
Very special
Mesh tube
inside. |
NOS |
Stock |
See
price list
for all tubes
(download
from the
menu)
|
D3a Siemens
Order Number:
114-113-85
|
|
This is another fabulous tube, like C3m, C3g, etc. It can be used pentode or triode mode. Triple Mica Version, gold pins. These are from a lot made by AEG Telefunken ULM, for Siemens. I can tell because I bought this lot directly as surplus. I have those in original sealed 100 pcs. master cartons. Each tube individually boxed. This is a FRAME GRID pentode. Extremely rare with tubes. So use it as a very high gain pentode, ideal for Moving Coil amplifier, or others that need lowest noise. Yet it can do high voltage as well. I have even seen it as current source in a mu stage, very successfully.
  
Normally, a pentode if connected as a triode will have unlinear curves, so they are not made for that. Not so with D3a! Truly amazing, excellent original triode curves are published. When you choose the recommended operating point, the curves are very linar, and in triode mode this tube has a gain of 77x. How about that gain?! From the family of ECCxx tubes, I only find ECC83 which can do so, but ECC83 is very high impedance, and ECC83 gold pin NOS is expensive. D3a will give a gain of 77 at much lower impedance. So you see, this tube is really a first class product.
  
D3a had a factory price of 286DM one. That is 145 Euro. The factory was EAG Telefunken, and production was by them for Siemens. It was the most expensive small signal tube they made.
datasheets: TFK - Philips
|
NOS |
Stock |
See
price list
for all tubes
(download
from the
menu)
|
| E180F TESLA
Order nr: 114-141-09 | . |
Packed in original bag. Beautiful Gold pin tube, also perfect in triode mode. Triode gain is 50, and Rp =2k3. For this price you can't go wrong! 3 Watt tube, wide wite flat cathode, for superb best linearity. SQ 10000h tubes, very tight to the specifications. Philips datasheet here . Link to external website, with computer made curves here.
|
NOS |
1 |
See pricelist |
ECH84 TESLA |
. |
Good printing, original box. Tests >100%. |
NOS |
1 |
7,- |
EF804S |
|
Telefunken NOS, Original box. With <>. Mint appearance. |
NOS |
4 |
120,- |
EF804S |
|
Siemens NOS, Original box. With <>. Mint appearance. |
NOS |
4 |
80,- |
EF804S |
|
Lorenz NOS, Original box. With <>. Mint appearance. |
NOS |
2 |
80,- |
EF86 SIEMENS |
1967 |
Good printing, original box. Tests 3.5mA. Good starts at 2.1mA |
NOS |
1 |
35,- |
EF86 TFK |
|
NOS. Original box. No <>. With test data. |
NOS |
5 |
55,- |
 (EF86) CV4085
GEC United Kingdom |
1980's |
 By G.E.C. Valve. England. This is one of the finest EF86 ever made.
|
NOS |
3 |
|
EF86 Tungsram |
. |
Test >100%. Original box. |
NOS |
1 |
31,- |
EF86 Ultron |
. |
Test >100%. Original box. |
NOS |
1 |
22,- |
EF86
RFT Neuhaus |
. |
Original quite old looking yellow-red mini watt boxes. Tests >100% |
NOS |
2 |
35,- |
EF86 TESLA |
. |
Original Blue Yellow Box. Lower box in picture. Left tube in picture. |
NOS |
5 |
28,- |
EF86 TESLA |
. |
Original Black Yellow Box, tested with Tesla TECHNOMAT. Special red stamp on box for that. Original Blue Yellow Box. Upper box in picture. Right tube in picture. |
NOS |
3 |
42,- |
EF804/ EF804S |
|
This tube is getting rare, and we don't get new stock in any more. What we have in our inventory is this:
- EF804, TFK <>, NOS, in those older, black and white boxes, with blue seal stickers on it. Some have inside is a small additional information paper by TFK.
- EF804S, ITT. A few pieces. NOS, Military OB. These are made by TFK, they have diamond botten, and are 100% identical tp TFK. These may have been spare parts for military equipment.
- EF804S, Siemens. Two pieces. NOS, Military OB. These are made by TFK, they have diamond botten, and are 100% identical. These may have been spare parts for military equipment.
- EF804S, TFK <>, Used but very strong. Some have like new stamps, some have the stamps almost gone.
- Test certificates can be made, at 6 Euro per tube, by the original test method. Which TFK says must be done with 500 Ohms cathode bias. If some say, you can test with fixed grid voltage, and it doesn't matter, either they are fools, or at TFK they were fools. You will agree it can be no other way :)
- For a certificate, order along this part number: 127-014-53 (= additional Certificate), for each tube.
- Please no pickery questions about getter shape, datecode, and pictures, and other things we have not enough time for. Prices are good, and these are fine tubes, all of them.
|
NOS and used. |
appr 15pcs in total |
See
price list
for all tubes
(download
from the
menu) |
EF806S
TESLA
NOS, OB
Order Number:
114-100-48 |
. |
Tesla NOS tubes have been a forgotten treasure for a long time. Well, these days are gone. It is so funny to see how the old story repeats over and over again. When you can buy them in quantities, nobody wants them, and when they're gone, everybody must have them. I remember I could buy TESLA KT88 for only 20€, right from the factory. And nobody was really interested. (Oh, it's only a Tesla.. well, I can buy them another time) Now they're all gone, I get still get requests from people who remember it from 15 years ago, that I had KT88 original Tesla. Only unfortunately nobody has them for sale, not even for highest prices. The intermediate period, when they change from normally available to unavailable is always very short. So this is standard behavior for the NOS market, and I am convinced this will never change.
With ALL TESLA small signal tubes, like E88CC, or EF86, EF806S, etc, etc, we are now in the transition period (from available to unavailable). Please read the above short story again, to know what the really means.
Collectors start now t buying those TESLA EF806S, which is identical to TFK EF806S, and Ultra High quality tube, low noise long life version, to replace EF86.
With Original box. You Must read the datasheet for details, it an amazing datasheet It is the same series of ultimate tubes: ECC801S, ECC802S, ECC803S and EF806S. This is probably the best EF 86 in the world. These tubes have Rhodium plated pins. Rhodium is in the family of "hard-metals", same as Molybdenum, or Tungsten. So it won't come off. Rhodium has contact properties, better than gold. (at those days, Rhodium cheaper, and they plated anything with it, but today it's a very expensive metal)
Tubes are in original Blue-Yellow Tesla boxes, with a quality stamp on the inside flap.
Pic1 - Pic2 - datasheet
|
NOS |
21 |
See
price list
for all tubes
(download
from the
menu) |
|
. |
Original yellow-red mini watt box. Tests >100% |
NOS |
3 |
15,- |
EL34
|
|
|
|
|
|
| 
EL84
AEG, Germany
| 1970 |
One single tube , with Funke W19 data. Pic1 - Pic2
|
NOS |
1 |
|
Pair:
Order Nr: 114-160-29
Quad:
order Nr: 114-161-72 |
|
The most amazing is the constant quality of them. They all have identical data. No leakage, no drift, just perfect tubes, each of them. Beautiful Quality. We never get this back again. |
NOS |
stock |
See
normal
price list |
Quad:
Order Nr: 114-253-40 |
1960's |
Reflektor with metallic print. Matched Quad from bulk pack. In white box, with matching data. . |
NOS |
stock |
See
price list
for all tubes
(download
from the
menu) |
Quad:
Order Nr: 114-254-24 |
1960's |
Reflektor with RED print. Matched Quad from bilk pack. In white box, with matching data. . |
NOS |
stock |
See
price list
for all tubes
(download
from the
menu) |
| 
GU50
Order Number:
114-043-09
CER. SOCKET
Order Number:
399-117-49
Triode Mode curves of GU50
| 1980's |
You like "another" tube than KT88.... try GU50 (similar to EL152).
This is very powerful tube. It can do 40 Watt continious and , 55 Watt Peak. (Full datasheet here). Good printing, original box. Absolutely excellent Audio tube. Military NOS quality, no commercial tube like KT88.
PICTURES + SCHEMATICS HERE
WE SELL THE SOCKET FOR THIS TUBE ALSO.
They're lower cost and compared to GU50, KT88 is only a consumer tube. GU50 is extremely strong and very low distortion. Amazing quality Russian military old stock.
Note: These cannot directly replace KT88, because the bias setting is another, and also the sockets are another type. We cannot help you with modifications, specially not when you have no idea how to do it. We can only give you the datasheet, and for if you know yourself how to do this. Well, it is easy to do for a specialist.
The bulb is hard glass. It has Four (!) getters, and inside made from hard metal. You can hammer a nail in the wall with this tube. Much different from the fragile KT88. The metal piece can be removed from the top, using a hot air gun, like you use for hair drying. Bake the top, and the glue will get soft then, and brittle away. The bakelit tops you can srew off, and are even nice feet for a small amplifier, no joke, these are lovely made.
THIS IS THE POOR MAN'S 300B
300B, 300B-XLS, 320B-XLS COMPATIBLE in Triode mode!
This is the poor man's 320B-XLS. Apart from the socket, and 12.6V indirect heater, this tube in Triode mode can replace 300B directly, and most 300B-XLS and 320B-XLS applications as long as you stay below 40Watt continious.
|
Continious
Dissipation |
Peak
Dissipation |
GU50 |
40W |
55W |
300B |
36W |
40W |
300B-XLS |
40W |
65W |
320B-XLS |
40W |
65W |
Please check the Triode curves! They are not just a "little bit" triode like, as you may know from KT88 or EL34 in triode mode.
FIrst, these are PERFECT triode curves, you may wish all power triodes were like that. And second, they are like 300B and 2A3. So take any 300B or 2A3 circuit, and there you go! |
NOS,
OB |
Stock |
See
price list
for all tubes
(download
from the
menu) |
NF2
Telefunken
Order Number
125-109-92 |
|
. Also used by Jean Hiraga. Mint condition, Original Box tube. Some boxes still sealed since 1940.
See here fot AD1-NF2 Project. http://jacmusic.com/kits/index.htm |
NOS,
OB |
|
22,- |
PL519
Philips |
|
Original Box tube. |
NOS,
OB |
|
35,- |
PL519
Telefunken |
|
Original Box tube. On the glass it has "Made in Germany" and TFK Logo and Berlin datecode: B4004112. |
NOS,
OB |
|
55,- |
| SPECIAL
RE-tubes
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