Finally found Japanesse Tanaka patent for Current Amplifier (CA) and winding configuration.
Guess what coil configuration Japanesse had been used in CA ? Partnered coils !
Experimentally confirmed that current from I=10-8A (10nA) change magnetic flux densiy to 100Gauss (0,01T).
It means we have deal with Amplification coefficient of 1 Billion times (180dB). And all of these thanks to complex spin structure of magnetic conductor made from Manganese magnet and Amplifying dielectric element made from Carbon.
http://www.freepatentsonline.com/4290070.html
Магнитопровод из Манганина сплава меди 85 % , с добавкой марганца 11,5% и никеля 3,5 %
Manganese = alloy of 85 % Copper, 11,5% Mangan and 3,5% Nickel.