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Old 20th August 2012, 07:47 AM   #21
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Join Date: May 2007
You will just add a little more gain from a 6DJ8 cascode than a 12AX7 with gyrator and CF. Cascode Zout will be very high and THD will probably be worse.

There is an ST70 rebuild(Curcio?) from some old magazine out there. Built it once but found CFs needed to enhance results. 2,5 doubletriodes needed, but only 1 present.
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Old 20th August 2012, 03:21 PM   #22
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Join Date: May 2007
Originally Posted by revintage View Post
2,5 doubletriodes needed, but only 1 present.

Sorry my mistake, 2 present.
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