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RE: Reposted

"Any" 12AX7 or electrically equivalent tube can be used. The clean, quiet, and affordable Sovtek 12AX7LPS is what I recommend.

The parts value changes in the EQ circuitry are needed for good RIAA accuracy.

The ZVN0545A source follower has been part of the concept, from day 1. The buffer deals with the WRETCHED drive capability of the 'X7 triode.

The original drawing was prepared by "Buzz" from a narrative I provided. "Buzz" loves "boutique" parts, but quite good results will be obtained using industrial parts of good grade. A PIO part (Soviet surplus K40) as the coupling cap. between the 2 stages gets my nod, as some benefit rates to be realized.

Contact "inmate" Jeff Yourison. He can provide you with his experience in executing the concept economically, while obtaining quite good results.


Eli D.


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  • RE: Reposted - Eli Duttman 14:01:39 12/04/14 (0)

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