EL84 Amperex Holland “”D”” getter used/75% (rX3-X9B=1959) date code on bottom of tube in white box
33ma and
Gm=9250
X=Sittard plant
Amplitrex Test Data
Good Ma range for used = 30-40ma
Good Gm range for used 9,000 – 11,000
Very sweet, incredible midrange, a reference quality 6BQ5, best sound.
– TELEFUNKEN OPUS 2004 RADIO
– GRUNDIG SO121 HI-FI CONSOLE 1959
– SCOTT 299A 1958-1960
– VOX


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