ECC83 Mullard f92 NOS long plates (1959) Rare Philips Miniwatt label V96/234

425,00

Highlights

  • Mullard f92 !
  • Ultra Rare 
  • Famous for its excellent acoustical performance
  • Blackburn production
  • Copper grid posts

1 in stock

Description

Pair: ECC83  PhilipsMiniwatt f92 long plate; made in 1959 by Mullard UK.

Description

This is a pair ECC83 double triodes that are produced for Philips Miniwatt by Mullard in Blackburn UK. The tubes have a ring getter, copper grid posts and long plates (Version f92; introduced just after the mC-series), see pictures. Both tubes are manufactured in 1959. The tubes are NOS !; no signs of use at all. Very healthy tubes with NOS specs and excellent matching systems; see test results.

The tubes look and measure unused; see pictures!

Sonics

The early the long plate Mullard, is highly regarded; delivers space and transparency. 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! 

Please read our test notes and shipping policy before buying !

Test results*

The measurement data below show that both systems are precisely matched and balanced. And fully in line with the factory specification for a NOS-tube.

Valve 1

V96

Ia (plate current):

Transconductance (Gm):

Gas test, Shorts test:

1,3/ 1,3 mA      

1,8/ 1,7 mA/V

OK 

=  NOS

=  NOS

Valve 2

V234

 Ia (plate current):

Transconductance (Gm):

Gas test, Shorts test:

1,2/ 1,1 mA

1,7/ 1,6 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

Tube type ECC83 
Quantity of Tubes One pair
Brand Philips Miniwatt
Manufactured  Mullard Blackburn UK
Dates 1959 / 1959  (codes: f92 B 9C & f92 B 9F )
Construction Long ribbed plates, copper grid posts
Getter Construction Halo getter
Print Condition Both excellent; see pictures
Box included Philips factory box
Equivalent tubes:  12AX7, ECC803S, CV4004, 12AX7A, B339, 12AX7WA
General test results  NOS 

Additional information

Weight 50 g
Dimensions 15 × 3 × 3 cm