I guess the following document has some relevance.
http://gramophone.net/Issue/Page/December%201978/197/834601/Movingcoil+stepup+devices
http://gramophone.net/Issue/Page/December%201978/197/834601/Movingcoil+stepup+devices
Active FETs vs. Step-up phono stage designs
I guess the following document has some relevance. http://gramophone.net/Issue/Page/December%201978/197/834601/Movingcoil+stepup+devices |
This link might be useful. http://www.gramophone.net/Issue/Page/December%201978/197/834601/Movingcoil+stepup+devices |