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(!!!!) (Best Value used) ECC83=12AX7 Fisher Mullard ribbed plates used/good 1964 copper grid posts (.7/.8mA Gm=1400/1500)
(!!!!) (Best Value used) ECC83=12AX7 Fisher Mullard ribbed plates used/good 1964 copper grid posts (.7/.8mA Gm=1400/1500)
$ 89.99
1 low noise tube) ECC83=12AX7 Fisher Mullard ribbed plates used/good 1964 (163-B4J3=1964) in white box - copper grid posts
1 section) Gm=1400 (0.7ma)
1 section) Gm=1500 (0.8ma)
Good used Gm range = 1300-1600
Good used Ma range 0.7 - 0.9ma
- Tested on Amplitrex
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See more: vacuum tube