Tube
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Prices are for one tube, unless otherwise indicated
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Condition
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Qty.
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EURO
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6SN7
General Electric
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1960..70
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Normal Version, with white print, White boxes. |
NOS
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5 |
35,- |
6SN7
General Electric |
1960..70
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Normal Version, with white print, Original boxes |
NOS
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10 |
40,- |
6SN7
General Electric |
1960..70 |
Normal Version, with red print. Original boxes. |
NOS |
2 |
45,- |
6SN7
RCA
Order nr:
114-219-19 |
1940..1970
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Used, testing strong, and sold with guarantee on good functioning.
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Stock |
20,- |
6SN7
General Electric
Order nr:
114-220-84
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1940..1970
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Used, testing strong, and sold with guarantee on good functioning.
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Stock |
15,- |
General Electric
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1960..70
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Very special filament construction, with one single U-shaped filament. This connection, inside from one triode to the other, is done very interesting. For what ever the reason, the connection is done with a piece of heater wire. Since the heater wire itself of any 6SN7 glows brighter than the cathode itself, the light effect in the dark is amazing and really beautiful.
Never seen this before. First choice Collectors item. Sorry for the price, but we never found those before. Original boxes.
6SN7 was sometimes used in applications, requiring lower capacitance to the amplifier chassis or to other parts of the tube. It may be one of those here, since the heater cross connection as is now on the top, thus reducing internal capacitance.
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NOS
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9 |
75,- |
6SN7-GT
Nation Union |
1945 |
National Union CNU-6SN7GT. Very beautiful and exclusive US NAVY tubes. These are the WWII series, of highest quality ever made 6SN7's. In this family is VT231, and the RCA smoked glass as well. Used in ships communication systems, made by USA workers, that knew the soldiers out there need to win the war with those. Lots of effort was made and very reliable audio tubes were needed.
These have gray glass, and you can only look in from above. Pic1 Pic2. These are either NOS, or from unused equipment.
I bought those from an experienced and reliable collector, selling off his complete inventory. Pic1 - Pic2. These are perhaps the best 6SN7 ever made, together with 5692 and VT231 Chrome getter.
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NOS |
6 |
95,-
The ones pictured here are sold, but I have more from Ken Rad. Identical appearance
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VT231
Ken-Rad |
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Same as above tubes, but these are marked Ken-Rad and have the much sought VT231 part number. The getter is visible, must a small edge above the socket, and then the smoked coating comes. Yes it is the higher quality Chrome getter :) So REAL VT231 from WWII. This is the ultimate 6SN7. Sorry I have no camera at the moment, you can ask later if important, but appearance is identical with the ones above, and from the same source. |
NOS |
4 |
155,- (one) |
Philips Miniwatt |
|
Philips Miniwatt. Made in Holland. Tubes with almost no use. Test values very strong. .Gm above 115% for both tubes. Test Data:
Tube1 - Curves1 - Tube2 - Curves2 |
1 Pair
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6SN7-GTB
Philco |
. |
Very clean tube, nice red print, in original colored box. |
NOS |
1 |
40,- |
6SN7
Pinnacle |
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Looks like a Haltron UK tube to me, but I can't guarantee what factory it comes from. The Tube is used, but appearance is factory-new. Nice, clean bright-white print. Tests good. |
1
|
25,- |
6SN7GTB
Raytheon |
Date code H20
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Nice, large yellow print, tall glass. White boxes. |
NOS
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4
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45,- |
6SN7GTB
Raytheon
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1939
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Normal version, yellow print. 8x large base. 3x small base. (check picture). The picture show dark glass, but that is shadow from the flash light. The glass is bright and totally clean, also inside. |
11
|
15,- |
Reflektor
6SN7-GTB
Order Number
114-045-85 |
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Original Reflektor boxes, red boxes or blue boxes. Note: This is almost 40 years old NOS!
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NOS |
Stock |
See
price list |
6SN7
RFT |
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tubes. Only very few were made ever. These are EAST GERMAN made original RFT 6SN7. There is AMAZING resemblance with the ultra rare Telefunken 6SN7. It has ceramics inside, no mica. Taken from apparently unused military equipment. They test like unused, and matching of the curves is superb, it is a dream! There was a box with used tubes s along with it, and 6 more of those RFT 6SN7 were in there, which were however used. At least one of them seems good to me. You get those 6 tubes for free with it.
Read the rest here...
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Curves Tube #4 |
Report Tube #4 |
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1 Pair, tests as new
1 used, good tube
5 weak tubes
So a total of 8pcs.
READ HERE.
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6SN7-GT
RSD Germany |
1995
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NOS
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4
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35,- |
TOSHIBA
6SN7-GTB
Order Number
114-080-07
|
1960 |
Toshiba Japan. 6SN7-GTB. Absolute mint quality items. Very rare to get such a beautiful lot of NOS. Very clean, very beautifully long plate tubes, with long glass. These look so amazingly similar to Telefunken 6SN7, perhaps it is no coincidence. Well it is just a speculation, but it looks like this to me.
Transconduction of the Toshiba 6SN7 is amazingly strong. Same as with Telefunken.
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NOS |
Stock |
See
price list |
6SN7 GT Telefunken
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|
The tube is in an older white box, with a Telefunken stamp on it. Original Telefunken. Perfect Test data. FULL TEST PORT HERE.
Sold in 2016, but I leave the tube here because if the rare pictures. |
NOS |
1 |
550,-
Sorry this tube was sold
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6SN7-WGTA
Tung-Sol
Order Number:
125-121-77
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NOS |
1 |
35- |
6SN7 |
. |
Nice, long glass tubes, of older construction. Clean, blue color original boxes. |
NOS |
2 |
55,- |
7N7-Sylvania
Order Number / one piece:
114-142-90
Special price!
Order Number / Five-pack:
114-165-48
7N7 to 6SN7 Adapter
Order Number:
399-125-92
With this adapter, you can plug in the 7N7 into any 6SN7 amplifier. This is plug an play, 100% guaranteed.
Now once and for all you have a 6SN7 (equivalent) with real 100% specs. Read the text on the right here!
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This 7N7 is a loctal version of 6SN7-GTB. It is an upgrade of 6SN7, with a ground shield around the base. This may solve some hum problems. For metal base EL34, people pay 300 Euro, where there is no need. Here you have a metal base tube with a good purpose.
Loctal is a similar socket as Octal, but the pins are thinner, as with EL84, and two connections are exchanged. So almost pin compatible, but not fully. The METAL SHIELD is connected to the centering pin of the socket. The loctal tube socket have a connection to this, so you can now use the metal shielding electrically as well, and because it's thick, and in the center, this works well. In case you don't want to use the ground connection, just don't connected anything to it. I cannot repeat often enough how IMPORTANT this ground connection is, to remove hum from a 6SN7 circuit.
If you want to replace 6SN7 by 7N7, we have very nice gold plated loctal sockets already for 2 Euro. Or, we have a small stock of German NOS sockets, which cost a little more, and then of course the Teflon ones from Yamamoto.
Why use 7N7? Well first of all because of the metal base shield. It reduces hum in very sensitive circuits. Another reason is, NOS is nicely available, in fine quality. Untouched quality in never opened before boxes. I have very good stock of Sylvania here. When you look inside the glass, you see the angled anodes, same as with 6SN7-GTB Sylvania. Also they perform out of the box very close to the average operating point, which we can definitely not say about new production. Pay for matching of those 7N7 is not needed. When you buy two, changes they are a pair is close to 100%.
The price is a give away, but please search for 7N7 in the general price list.
About the AMAZING Quality of this 7N7 lot. With 6SN7 NOS, we need to look at the original data here . As a tube dealer, I can tell you, most of the time 6SN7 NOS I get offered is medium quality. The are not at 9mA anymore, as they are supposed to be. By itself this is not a complaint for a random tube. At 8mA, even 7,5mA they can be a fine tube, it depends on the rest of the test. However, my observation is always the same: They are most of the time below 9mA and rarely above. Like 90% is around 8mA or fractional lower. (Same problem is with USA made 12AX7 NOS, many are below average nowadays, and they don't get better from storage, and burn in won't do the magic trick). So each time I can find some NOS 6SN7, the same story repeats: I hope for 9mA or above, and what I get is 8mA or below, and boxes that have been opened 50x before by somebody with dirty fingers, and boxes fall apart just from taking out the tube 50 times. People that have a good tube tester, and tested many 6SN7 will definitely know what I mean. Also Russian NOS, it is the same. 8mA average Even new made Electro Harmonix, it is the same: 8mA average Though specially for new made tubes, there is no need for most of them to be around 8mA, but they are. This quality issue is across all 6SN7 you get. This is why I am so extremely happy with this 7N7 stock, the average test value of those is REALLY 9mA indeed. So some are 8...9mA, some are 9...10mA, and most of them are close to 9mA. The way they were, at the day they were made :) This lot is so exceptional nice quality! The boxes were not opened before. So sure nobody way picking out the good ones. I was the first one to open each 100-pack. Since this is nothing but a 6SN7 with another socket, I decided to buy them all. I am sure it was a good investment. |
NOS |
Stock |
See
price list |
114-188-55
|
1940 |
These are branded TRU-VAC 1960, as on picture. However inside is the same system as the extremely expensive SYLVANIA CHROME TOP VT-231. You can go looking for VT-231 on Ebay, and they sell for a minimum of 40 Euro for tubes of unclear condition and unpopular brands. The better brands NOS VT-231can cost quickly 300 Euro for a matched pair. Not so for most wanted of all: The SYLVANIA CHROME TOP VT-231 is around 1941 production, in those brownish military boxes, with a separate inside part which you can slide out. NOS pairs of these are traded at any crazy price, the problem is not to sell them, but to buy them.
For sale here is not SYLVANIA CHROME TOP VT-231, but something which comes close! These 7N7 have an identical glass bulb and internal construction as the SYLVANIA CHROME TOP VT-231, and it is evident they are made by Sylvania indeed. Note, the VT-231 has parallel plates. (So not the more recent angled plates, which is the most common form, found today).
These have of course the LOCTAL socket of 7N7. So in order to use these as VT-231, the 7N7 to 6SN7 adapter needs to be purchased along with it. (The adapter has part number 399-125-92) |
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three pairs |
One Pair normal glass, Pair is 120 Euro.
One Pair Long glass, (pictured here). Pair is 130 Euro.
One Pair long, smoked glass, Pair is 150 Euro. |