ECC81 / 12AT7 Brimar 1954 ! black plates NOS (V37/38)

285,00

Highlights

  • 1954 !
  • Brimar UK production
  • Bended wire-getter
  • Black plates
  • Copper grid posts

1 in stock

Description

Pair: 12AT7 / ECC81 made in by Brimar UK; both in  1954

This is a pair 12AT7 / ECC81 produced by Brimar UK both in 1954. The tubes have a bended wire-getter and copper grid posts, see pictures.The screen print is nice and the etched codes are clearly visible. These tubes show no signs of use and are most likely NOS. See pictures. The early Brimar is highly regarded. Very healthy Tubes with matching systems; see test results.

Sonics

The acoustic properties of the black plate ECC81 (Brimar production) are outstanding and widely known. I refer to the threads on the web for more information. Excellent preamp valve, low noise, very smooth extended highs, very good in phono stages. 

Balanced and smooth sounding with liquid midrange, recommended!

Please read our test notes and shipping policy before buying !

 

Test results*

Valve 1

V37

Ia (plate current):

Transconductance (Gm):

Gas test, Shorts test:

10,2/ 10,0 mA      

5,6/ 5,7  mA/V

OK 

=  NOS

=  NOS

Valve 2

V38

 Ia (plate current):

Transconductance (Gm):

Gas test, Shorts test:

10,0/ 10,0 mA

5,4/ 5,5 mA/V

OK

= NOS

= NOS

 

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

 

Short description

Tube type ECC81
Quantity of Tubes One pair
Brand Brimar
Manufactured in UK Brimar
Dates 1954 (5L4 & 2I4)
Construction Black plates
Getter Construction Bended wire getter
Print Condition Nice; see pictures
Box included generic white box
Equivalent tubes:  12AT7, 12AT7WA, 6201, ECC801S, ECC81
General test results  NOS

Additional information

Weight 50 g
Dimensions 15 × 3 × 3 cm