FIELD: electronics.
SUBSTANCE: invention relates to electronics and can be used in string electric musical instruments that convert mechanical vibrations of strings into electric signals, in particular in electric guitars. Claimed invention is characterized by using an acoustic pickup coil with few turns and a tool amplifier with maximum suppression of the in-phase signal, note here that instrument amplifier is connected by differential transimpedance amplifier circuit to provide maximum warning and maximum suppression of noise.
EFFECT: thus, providing absence of dependence of degree of suppression of interference from spread of resistances of matched resistors and high noise immunity, which enables to virtually eliminate noise in acoustic pickup signal.
1 cl, 4 dwg
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