ECC81 Pair Mullard same date 1958 NIB special getter! (V158/159)

255,00

Highlights

  • NOS specs 
  • Copper grid posts
  • Highly regarded sonics
  • British production

1 in stock

Description

This is a pair ECC81 NEW in Box (!) produced by Mullard in the fifties in the UK. The tubes have a special getter shape (see pictures), copper grid posts and smooth plates, see pictures. Very healthy NEW tubes with excellent specs! Tubes with matching triode systems; see test results. The halo getter has a non standard structure, I have never seen this construction before. See first picture.

The tubes are brand new in original box with pin protectors!

Sonics

The very early British ECC81 tubes from Mullard are famous for their beautiful sonic character. I refer to the many threads on the web for more information. This is pair an excellent example. Balanced and smooth sounding with liquid midrange, recommended!

Note: if your system is to “warm”, this tube is not a first choice. ECC83 tubes of Philips, Valvo or to a lesser extent Telefunken are to be considered in that situation. 

Test results*

Valve 1

V158

Ia (plate current):

Transconductance (Gm):

Gas test, Shorts test:

12,5/ 12,4 mA      

6,0/ 5,9  mA/V

OK 

=  NOS

=  NOS

Valve 2

V158

 Ia (plate current):

Transconductance (Gm):

Gas test, Shorts test:

12,0/ 12,1 mA

6,0/ 5,7  mA/V

OK

= NOS

= NOS

 

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

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

Short description

Tube type ECC81  
Quantity of Tubes One pair
Brand Mullard BVA
Manufactured in UK, Blackburn
Dates 1958 / 1958 (Tk1 B 8I |Tk1 B 8I) 
Construction smooth plates 
Getter Construction Special getter
Print Condition Both excellent; see pictures
Box included Original Mullard e box
Equivalent tubes:  12AT7, ECC801S, 12AT7A
General test results  NOS 
Please read our test notes and shipping policy before buying !

Additional information

Weight 50 g
Dimensions 15 × 3 × 3 cm