It will be a RIAA preamplifier with balanced input signal.
For those who are interested in the upcoming vinyl music.
Its goal is to have very low input voltage and very low generator impedance (for MC heads, e.g. Ortofon MC 10/20/30 have 3 ohm), while trying to achieve low noise. The hardware measurements showed about 4dB noise figure (for 3 ohm!), if you know better one, please contact me!
The input stage (SSM2212) is put into the headshell which can be replaced together with the head (e.g. using MM/MI head too).
This simulation contains some additional circuits (at bottom right) to test the output signal.