ECC83 / 12ax7 Brimar 1955! long plates NOS (V131/132)

Description

Pair: ECC83 made in by Brimar UK. 1955

This is a pair ECC83 produced by Brimar UK. The tubes have a bended wire-getter, see pictures.The screen print is nice and the etched codes are clearly visible. See pictures. The early Brimar is highly regarded. Very healthy NOS ! Tubes with matching systems; see test results.

Sonics

The acoustic properties of the long plate ECC83 (Brimar production) are legendary and widely known. The overall soundstage of Brimar 12AX7 tubes, like the British Millards, is warm (warmth in the mid and lower regions) and lively with a very spacious soundstage. These tubes reproduce the human voice with impressive realism (opera!). The British-made Brimar tubes provide a beautiful sparkle at the top end of the spectrum coupled with rich bass. This tube type is low-noise and therefore very suitable for pre-amplification. I refer to the many 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!

Test results*

Valve 1 573 3L5 V131	Ia (plate current): Transconductance (Gm): Gas test, Shorts test:	1,2/ 1,2 mA       1,8/ 1,8  mA/V OK	=  NOS =  NOS
Valve 2 573 3L5 V132	Ia (plate current): Transconductance (Gm): Gas test, Shorts test:	1,2/ 1,2 mA 1,7/ 1,7  mA/V OK	= NOS = NOS

Where NOS is : Ia = 1,1 to 1,4mA, Gm= 1,3 to 1,95 mA/V. 

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

 

Short description