PURPOSE: To make suitable the generated voltage, by enabling to adjust the position of the armature of the cunti-lever end to avoid the level difference due to the polarity of generated voltage.

CONSTITUTION: The end of the cunti-lever 2 fitted with the stylus at the tip is loaded with nonmagnetic oscillator 3, and to the oscillator 3, the coreless coil (not shown) as the armature is fitted to the position at 45° upper left and right to the stylus 1. Further, at the end of the cunti-lever 2, one end of the piano wire 6 made of the member 5 is fixed, and another end of the piano wire 6 is fixed to the suspension 7. Further, the suspension 7 is fixed to the holder 9 with the fastening screw 8 movably toward the axis, and damping operation is given to the oscillation of the oscillator 3 with the damper 10. Further, the magnets 11L, 12L are fitted so that the same poles can clip the central yoke 13L and opposed each other, the front yoke 14L and rear yoke 15L are fitted to another pole. The position of the armature is made adjustable to avoid the level difference due to the polarity of generated voltage, allowing the suitableness of generated voltage.