E88cc pair Telefunken Ulm, same date (V367/369)

345,00

Highlights

  • Outstanding spacious and detailed
  • Ulm production
  • matched and balanced pair
  • grey shield
  • gold pins

1 in stock

Description

Telefunken ECC88 twin triodes, made by the Telefunken works, Ulm, Germany.

These tubes have a grey shield and declined getter support. Both tubes are manufactured in 1964 (26 October). Long life version of a ECC88 tube. One of the finest E88CC; spacious, neural and very detailed sound image.  I refer to the web for more information. 

The tubes are thoroughly tested. The matched pair has excellent test values that match the factory specifications very well and and both tubes have balanced systems. See test results below.

Test results

The measurement data below illustrate that the tubes are matched and internally balanced. 

Valve 1

V367

Ia (plate current):

Transconductance (Gm):

Gas test, Shorts test:

15,2 /15,0 mA   

13,4 /12,9 mA/V

OK

=  NOS / NOS

=  NOS / NOS

 

Valve 2

V369

 Ia (plate current):

Transconductance (Gm):

Gas test, Shorts test:

15,4 /15,2 mA

12,4 /12,6 mA/V

OK

=  NOS / NOS

=  NOS / NOS

 

Test methods and reference values are outline on the Tube testing page.

 

Summarized description

Tube type ECC88
Quantity of Tubes One pair
Brand Telefunken
Manufactured in Ulm, Germany
Date code U6214003c & U6214003c
Plate Construction Frame grid with grey shield
Getter Construction Inclined getter support
Print Condition See pictures
Box included Generic Telefunken boxes
Equivalent tubes:  CCa 6922 E88CC
General test results  NOS 
Please study photos carefully; what you see is what you get!
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Additional information

Weight 50 g
Dimensions 15 × 3 × 3 cm