ECC803S TELEFUNKEN pair same date <> NIB > Holy Grail (2 pairs available)

1.825,00

Highlights:   

  • Telefunken ECC803S   
  • New in Original box NIB
  • Same date and serial numbers
  • Diamond bottom
  • Fully justifiy the astronimal cost
  • Balanced systems; all six pieces almost identical

1 in stock

Description

The Telefunken ECC803S is the best ECC83 ever made!

A pair of Telefunken ECC803S tubes made in Ulm Germany. never used, in their original box; please see 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. 

The printed code U9201301n on the glass of all 6 tubes indicates that the tubes are manufactured in the same month in the Ulm plant in Germany. The tubes have the typical plate structure of the Telefunken ECC803S tubes (frame grid) and of course the diamond bottom.

All tubes are thoroughly tested. They have excellent electrical values (note test results below) and may be considered equal within the limits of measurement accuracy! The test values match the factory specification very precisely and both internal systems are balanced.

Each tube is a real jewel, so please excuse the firm price.They fully justify the high costs. Telefunken produced a very limited number of these beauties. 

The ECC803S will bring the real instruments and orchestra to your room!

Sonics

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

ECC803S: balanced and smooth sounding with liquid midrange, and extremely natural;  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.

Pair !

Valve 1  sold !

V315

Ia (plate current):

Transconductance (Gm):

Gas test, Shorts test:

1,4 / 1,3  mA    

1,7 / 1,6mA/V

OK 

=  NOS / NOS

=  NOS / NOS

 

Valve 2 sold!

V316

 Ia (plate current):

Transconductance (Gm):

Gas test, Shorts test:

 1,4 / 1,3 mA

1,7 / 1,6 mA/V

OK

=  NOS / NOS

=  NOS / NOS

 

Pair 2

Valve 1 

V323

Ia (plate current):

Transconductance (Gm):

Gas test, Shorts test:

1,4 / 1,3  mA    

1,7 / 1,6mA/V

OK 

=  NOS / NOS

=  NOS / NOS

 

Valve 2

V324

 Ia (plate current):

Transconductance (Gm):

Gas test, Shorts test:

 1,4 / 1,4 mA

1,7 / 1,7 mA/V

OK

=  NOS / NOS

=  NOS / NOS

 

Pair 3

Valve 1 

V325

Ia (plate current):

Transconductance (Gm):

Gas test, Shorts test:

1,4 / 1,4  mA    

1,7 / 1,7mA/V

OK 

=  NOS / NOS

=  NOS / NOS

 

Valve 2

V326

 Ia (plate current):

Transconductance (Gm):

Gas test, Shorts test:

 1,3 / 1,3 mA

1,6 / 1,6 mA/V

OK

=  NOS / NOS

=  NOS / NOS

 

The measurement data show that both systems of all tubes are matched nicely (< 5%). The test results fulfill the factory specs of a new tube.

(Telefunken factory specification see picture)

Summarized description

Tube type ECC803S diamond bottom 
Quantity of Tubes One pair
Brand Telefunken
Manufactured in Ulm, Germany
Date code U9201301n
Plate Construction “Spangitter” 
Getter Construction Halo getter
Print Condition Excellent; see pictures
Box included Original Telefunken box
Equivalent tubes:  E83CC, ECC83, 12AX7, CV4004
General test results  NEW 
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 !