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This pair of Amperex 12AX7A tubes is very closely matched, within 2.6%.  The tubes are also date matched, with both being manufactured in the 49th week of 1969 in the famous factory located in Heerlen, Holland.  These tubes test significantly stronger than NOS.

Be wary of other sellers who listed their tubes as being matched if they do not give you the test results or the equipment used to test the tubes. 

I personally tested these tubes on my recently calibrated Hickok 600a tube tester and the results are as follows:

1875/1900
1850/1900

ConditionBrand New (New)
Brand New items are sold by an authorized dealer or original builder and include all original packaging.Learn more
Brand
Model
  • 12AX7A
Categories
Year
  • 1969
Made In
  • Netherlands

TX Audio Tubes

HOUSTON, TX, United States
Sales:515
Joined Reverb:2021

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