ECC803S TELEFUNKEN <> NIB/NOS > Holy Grail – V6

925,00

Highlights:   

  • Telefunken ECC803S   
  • NOS  specs
  • <> bottom
  • gold pins
  • super ultra rare!
  • balanced triode systems

1 in stock

Description

This is a  Telefunken ECC803S made in Ulm Germany. Never used; please see also pictures and test data!

The properties of this tube are legendary and widely known. I refer to the many threads on the web for more information. Telefunken produced a very limited number of these beauties. 

The printed code U7107401Z on the glass of both tube indicates that the tube was manufactured in 1967 in the ULM plant in Germany. The tube has the typical plate structure of the Telefunken ECC803S (frame grid) and of course the diamond bottom. The tube has excellent test values that match the factory specification very precisely. It has balanced triode-systems. 

This tube is a real jewel, so please excuse the firm price.

Sonics

Excellent preamp valve, low noise, very smooth extended highs, very good in phono stages. 

ECC803S: balanced and smooth sounding with liquid midrange, recommended!

Test method & results

Tested with official Telefunken test set-up. Test methods are outline on the Tube testing page, for test conditions see Category Page.

The measurement data below show that both systems are well balanced (< 5%). And fulfill the factory specs of a new/NOS tube.

Tube 1

Section 1/2

 V8

Ia (plate current):

Transconductance (Gm):

Gas test, Shorts test:

1,2 / 1,2  mA

1,6 / 1,7mA/V

OK

=  NOS / NOS

=  NOS / NOS

 

(Telefunken factory specification see test page)

Summarized description

Tube type ECC803S diamond bottom 
Quantity of Tubes One tube
Brand Telefunken
Manufactured in Ulm, Germany
Date code U7107401Z,  April 1967  
Plate Construction “Spangitter” 
Getter Construction halo getter
Print Condition excellent; see pictures
Box included Generic Telefunken box
Equivalent tubes:  E83CC, ECC83, 12AX7, CV4004
General test results  NOS 
Please study photos carefully; what you see is what you get! Ask any questions before buying. Thanks

Please read our test and shipping policy before buying !