ECC81 NOS TUBES
Last updated: 07-Feb-2018

TFK ECC801S West Germany- Diamand bottem- the reference

EUROPE 
USA 
Overview of  ECC81 / 12AT7  family. This is a tube with a GAIN of 60x  
ECC81 
12AT7 
Generic P/N.  Next generation product after 6SL7
 
.
JAN-12AT7W.. 
Anything with "W" is by military version, specs MIL-E-1 /3D. A bit like ECC801S, but not as good. 
.
JAN TESTED 
like: 
JAN-12AT7W 
See:  FAQ
ECC801S
Telefunken 
6201
Telefunken
Different in five points: 1)Long Life 10k hours. 2) 500G shock. 3) filament with extra isolation, will stay "like new" allways. Can be used in cut-off condition for longer periods, which is not possible with normal 12AT7.  4)failure rate max 0,15% per 1000hrs 5) tighter tolerances. Since 1...4 can not be checked when the tube is new, it is matter of trust in the manufacturer. So, ECC801S from top brands are very expensive.  Because of point 3) this tube will have lower filament hum. 
ECC801S
if not TFK
Not just probably not as good as Telefunken, they ARE less good as Telefunken. If you want to know why, the answere is found in the datasheet. (where else!?) Some new production ECC801S, can be even be regarded fakes, these are normal ECC81 with gold pins, and must be uptested first be an ECC801S for Audio purposes.
 
6201
* * * * *
Five Stars Series from General Electric. Triple Mica tube. Better than normal 6201 at five points. Check five stars brochure, you can find it at www.4tubes.com
 
6201
VALVO-BLUE
On par with Telefunken EC801S. 6201-Blue series is even gold plated, whereas TFK is not. This tube is German made, in Hamburg, factory Stresemanallee. The so called pinched waist, with curious glass shape, is much rarer than Telefunken. Very high collector prices payed for mint items in original box. Individually numbered on the box. Special Valvo BLUE SERIES datasheet excists.
E81CC 
.
Low noise, gold pin. 
E81CC-SQ 
.
SQ=Special Quality. EXTRA selected for lowest noise. Gold pins.

6679

  They say it can tolerate 20% lower or higher heater voltage, compared to maximum +/- 5% which is standard. So that is 9.6....14.4.V. Applied in battery operated equipment, and car radios. And BECAUSE a tube with +/- 20% can not be made, this is a strange bird.
7728
  Made by Hytron or CBS. Gold pin version, sometimes rebranded as Raytheon. High Quality version.
A2900
  Gold Monarch Series by Genelex.
ECC8100 
.
Simular like ECC81, but not fully compatible.  For cascoded circuits, with specal shielding.

NOS Supply: Good news for a change: NOS supply is still there. Available is even still Mullard and Philips in quantities. Top brands. t's a miracle! By the way, the world of NOS tubes works very simple. Anything that can be bought easily, is of nobodies interest, and vice versa. We say that this situation for ECC81 is probably as good now as it's never going to be any more. (and since we believe ourself, we stashed some away for later... ;)

ECC81 - ECC82 - ECC86 - ECC88 very short overview

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. (The VAT rate is 16% until Dec31th 2006, and after that 19%) 

 
   
.
Qty. 
EURO 

12AT7 Sylvania
Order nr:
114-131-09

 
Original Box, Clear printing.
NOS 
Stock

12AT7WC-JAN
Philips ECG
Order nr: 114-014-67
1985 
Military box, with many printing on it. JAN tested tubes! Black plates. Very blue or green grinting on the glass. With datecode on box. Box Picture .
NOS 
Stock

6201
VALVO White SERIES

  Valvo, white print , gold pins.

Mint items, tube printing is fresh like new, boxes perfect. When you buy fivem, you get the original five-sleeve that was with it, or if a sleeve is available. With Amplitrex computer tested data sticker on the box. Sticker is removable type (can be removed with hot air from a hair dryer). Ask for a matched pair, if needed, this is at no charge, but make sure it appears on the price offer. So it will not be forgotten at packaging. Test perfect.Absolutely Flawless quality in all aspects, electrical superb, and nice original boxes.

Small printing of most of them:
D16
D9D4

NOS 
few pcs 
95,- 
E81CC
Mullard  
1970 
Clean, original boxes, gold pins
NOS 
few pcs
95,- 

E81CC-SQ
Philips  
1970 

Clean, original boxes, gold pins. Special quality for LOWEST noise.

NOS 
few pcs 
85,- 

E81CC
Siemens & Halske
 

E81CC Siemens Germany. Original Box. ULTRA Quality. Triple mica, construction identical to TFK ECC801S. I have two matched pairs, with testing data. Boxes + Printing mint condition. These are the older type, still under Siemens & Halske brand, with the SH Logo. The Siemens & Halske brand was used until 1966. So these are from the 1950's or 1960's.

 
NOS 1 pair
120 Euro for the pair.
E81CC
Siemens
Order nr:
114-140-34
 
E81CC Siemens Germany. Original Box. ULTRA Quality. Similar to ECC801S.
NOS
Few Pieces


12AT7
Brimar

appr. 1960 

Very clean, original boxes. (red + yellow, with special cushion in it) Mint items, made in England. These have black plates and a round getter. There is a small lettering on the tube, 3DQ/1565. If somebody knows what it means, let me know I can add this information here.

 

NOS 
few pcs
95,- 
ECC801S 
Haltron 
1965 
Clean, original boxes
NOS 
few pcs
95,- 
ECC801S Telefunken
Order Nr:
114-039-78
1960

The TFK <> ECC801S  is the best ECC81 ever made on this planet. These are made in West Germany, have a diamond <> bottem (check here) and original boxes. Boxes are originally factory sealed, in original 5-packs. These are rarer than gold in this quality! Made in Ulm, West Germany. These can be bought originally closed, and then you buy them as collectors item, as a "sealed box with untested contents". Contents are "as is". Or we open the boxes for you, and you receive them with test data made with the Amplitrex tester. So you can have it either way.

Some other pairs have dusty boxes, and cellophane is opened. Pic1 - Pic2 - Pic3. Inside are prestine quality tubes, with identical datecodes. These are extremely rare with identical datecodes. It means they were indeed made the same day. Two perfectly matched pairs available. Amplitrex tested.

NOS
ECC801S
Telefunken
Order Nr:
114-012-48
1960
These ECC801S were made for Telefunken, in USA. These have no diamond <>. On original old Telefunken boxes. Test values 100%. Very attractive price! The datasheet for those tubes is here.
NOS
Stock

ECC801S Siemens
Order Nr: 114-013-91
1970..1980's

Very impressive quality ECC801S. These are alle balanced right out of the box. Test values are tight and close to the center value for all tubes no matter which one I take out of the pack. This is characteristic for ECC801S, but there has allways been a lot of re-stamping ECC801S on plain ECC81. Well not with those, they are real ECC801S, for sure. For those who can decipher it, there is a picture of the small printing too. It shows also these have the nice copper grid bars, as was seen with most Mullard types.

NOS
Low stock
ECC801S Siemens

Order Nr: 125-012-73
1970's

Siemens Germany. Used tube. Funke W19 tested, very strong values. With guarantee to be very good condition. See pictures for test values. "good" starts at 7mA

Used
2

38 Euro for the PAIR

ECC81
Philips   

1950 

Very special. Printed ECC81 like normal. Additional there is a blue+yellow colored oval shaped old Philips logo on the tube. Never seen this before! Check here for another picture.

Small code on the side is:

TK1
TCD

NOS 
70,- for the pair
ECC81
Siemens  
1970 
Nice, clean boxes. (orange + blue)
NOS 
few pcs 
35,- 
ECC81
Siemens   
1950 
Nice, clean boxes. Old style, yellow + blue, with red seal. Some have still closed seals. If you want functional guarantee on a sealed tube, I can open it and test it for you. If you order it still sealed, you order it "as is". 
NOS 
40,- 


ECC81 / 12AT7
Sylvania USA
Order nr: 114-142-90

1970's

Test Data included (with Amplitrex Computer Tester)
NOS 
Stock
ECC81 
Telefunken 
1960 
White box. Print is bright and clean. with <> sign.
NOS 
75,- 
ECC81 
Valvo 
1965 
Nice, clean box. Eight have have the same production site number "200 2291" stamped on the boxes!
NOS 
few pcs 
30,- 

ECC8100 
Telefunken
enlarge
1960..1970 

Frame Grid. Gold pin tubes.  Original boxes.  Tube nr 2 + 3 from the left, on the picturel This tube is something in bewteen ECC88 and ECC81, but ECC8100 is specially made for cascode circuits. Not directly compatible to ECC88 or ECC81.

As always... when you are nor afraid of unfamilair part numbers , when you feel no "must copy" excisting circuits... here is the perfect chance for a pair of beautiful tubes.

NOS 
15,- 
ECC8100 
Telefunken
1960..1970 
Frame Grid. White box.  Tube is offered as used, but may be new. Printing is fainted, but unburned, very white still.  Left tube on the picture
Used 
12,- 

smallest electron tubes ever seen
compared to 12AT7


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