Phono Stage of M2D preamp is a non-inverting cascade design using the 6922 dual-triode tube. Gain of phono stage is 28db and line stage is 30db, 58db overall. Regards, Jerry-AI's Service Mgr.
Here's a link to the ai website http://www.mla.org/resources/committees/comm_professional They claim a total gain of 56 db (I think). Your best bet is probably just to call them.
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