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(!!!!) (Holland single 1958) ECC83=12AX7 Triotron Holland "long plates" with "D" getter halo like new 1957 (1.1/1.2ma and Gm=1700/1700)

$ 299.99

1 low noise tube) ECC83=12AX7 Triotron Holland "long plates" with "D" getter halo like new (mC5-delta7A) = 1957 - copper grid posts - in white box

1 section) Gm=1700 (1.1ma)

1 section) Gm=1700 (1.2ma)

 

NOS Gm = 1500-1600+

NOS mA = 1ma+

 

- best sounding 12AX7

- lively midrange

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