CCa Telefunken Ulm (V419)

635,00

Highlights

  • Summit of the E88CC family
  • Ulm production
  • Balanced triodes
  • Long life
  • Gold pins

1 in stock

Description

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

The CCa is the super SQ version of the already outstanding E88CC. It is considered as the summit of the ECC88-family by many. The tube has a grey shield and declined getter support. The tube is manufactured in 1962. HQ version of a E88CC tube. One of the finest E88CC; more spacious, neutral and more detailed sound image. I refer to the web for more information. 

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

Test results

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

Test results*

Valve 1

V419

Ia (plate current):

Transconductance (Gm):

Gas test, Shorts test:

14.6 / 14,6  mA    

10,7 /10,7 mA/V

OK 

=  NOS / NOS

=  NOS / NOS

 

Where NOS is : Ia = 14,2 to 15,8mA, Gm= 10,5 to 14,9 mA/V. 

  *  For test methods and factory specification read the tube testing page.

Summarized description

Tube type CCa  (ECC88)
Quantity of Tubes One
Brand Telefunken
Manufactured in Ulm, Germany
Date code U3112101N
Plate Construction Frame grid with grey shield
Getter Construction Inclined getter support
Print Condition Very nice; see pictures
Box included Original 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