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ECC83 Philips Miniwatt pair, 1960, NOS specs v330/ 331

215,00

Highlights:   

  • Philips Holland sound signature  
  • Heerlen production
  • Balanced systems
  • NOS specs
  • Early I62 version

1 in stock

Description

Philips Heerlen Holland production !

This is a pair ECC83 produced by Philips in1960 in Heerlen Holland (version I62). The tubes bear the Philips Miniwatt print. The tube has a ring getter on ‘silver’ post and ribbed grey plates, see pictures. Matched tubes with balanced systems; see test results.

Sonics

The Heerlen ECC83 double triode’s most distinctive sonic feature, like that of many Heerlen double triodes, is its transparent, natural and sparkling midrange presentation, with a light touch of warmth illuminating your music. The sound image is spacious and deep, structured. The bass is deep but well controlled. I refer to the many threads on the web for more information. Excellent preamp valve and because of the low noise level, very suitable in phono stages. These early ECC83 tubes fulfill the previous description without doubt.

Note: if your system is “bright sounding’ or to “bright/harsh” already, this tube is not a first choice. British made ECC83 tubes or Telefunken are to be considered in that situation. 

Test method & results

The tubes have been tested carefully with the official Telefunken test set-up and our sophisticated test equipment. Please read our testmethod for the ECC83 tube family. The measurement data below shows that these tubes are matched to each other and are internally balanced. And meet the factory specifications of a new/NOS tube.

Valve 1

V330

Ia (plate current):

Transconductance (Gm):

Gas test, Shorts test:

1,2 / 1,2  mA    

1,6 /1,6 mA/V

OK 

=  NOS / NOS

=  NOS / NOS

 

Valve 2

V331

Ia (plate current):

Transconductance (Gm):

Gas test, Shorts test:

1,3 / 1,3  mA    

1,6 /1,7 mA/V

OK 

=  NOS / NOS

=  NOS / NOS

 

Where NOS is : Ia = 8,7 to 12,5mA, Gm= 1,9 to 2,7 mA/V.   Ia = 10,6 ± 1,9 mA. (Telefunken factory specification see test page)

Short description

Tube type ECC83
Quantity of Tubes One pair
Brand Philips Miniwatt
Manufactured in Heerlen Holland UK
Dates 1960 (I62 Delta 0C)
Construction Ribbed grey plates 
Getter Construction Halo getter on ‘silver‘ post
Print Condition Nice; see pictures
Box included Generic Philips Miniwatt box
Equivalent tubes:  12AX7, ECC803S, CV4004, 12AX7WA, E83CC
General test results  NOS 
Please study photos carefully; what you see is what you get!
Please read our test and shipping policy before buying !

 

Additional information

Weight 5 g