[GP49000]

Here is a sheet prepared by Sonotone, with their recommendations for connecting Sonotone cartridges to magnetic and line level inputs. Note that the line level connections are for TUBE amplification, with its high input impedance. Most transistor inputs have a much lower impedance and many ceramic cartridges sound poor when directly fed into such.

The circuit for magnetic input shows a tube, too; but the impedance seen by the cartridge is dependent on a shunt (load) resistor, so this circuit would work with either a tube amplifier or most transistorized ones.