captainbeefheart Posted January 22, 2022 Share Posted January 22, 2022 Matched pair of early ribbed Telefunken 12AX7/ECC83 Gains- 53/53 53/52 where a 'perfect' 12AX7 in circuit gain calculates and simulates out as 53. Also tested on Hickok 539 for gas and leaks and gm. Asking $100 shipped 1 Quote Link to comment Share on other sites More sharing options...
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