A timbre selector comprising: a first signal processing unit that includes a first input terminal (T 1IN), a first filter and a first output terminal (T 1OUT), the first input terminal receiving a first tone signal, the first filter processing the first tone signal to generate a first processed signal, the first output terminal outputting the first processed signal; a second signal processing unit that includes a second input terminal (T 2IN), a second filter and a second output terminal (T 2OUT), the second input terminal receiving a second tone signal, the second filter processing the second tone signal to generate a second processed signal, the second output terminal outputting the second processed signal; and a first switch that switches between a plurality of positions including first, second and third positions, the first switch being connected to the first output terminal at the first position, the first switch being connected to the first and second output terminals at the second position, the first switch being connected to the second output terminal at the third position, the first switch outputting the first processed signal at the first position, the first switch outputting the first and second processed signals at the second position, the first switch outputting the second processed signal at the third position, characterized in that the timbre selector further comprises: a third signal processing unit that includes a third input terminal (T 3IN), a third filter and a third output terminal (T 3OUT), the third input terminal (T 3IN) receiving a third tone signal, the third filter processing the third tone signal to generate a third processed signal, the third output terminal (T 3OUT) outputting the third processed signal, wherein the plurality of positions of the first switch further include a fourth position at which the first switch is connected to the second and third output terminals, and the first switch outputs the second and third processed signals at the fourth position, and wherein the first switch further includes an operator that selects one from the plurality of positions, further comprising: a circuit element that includes a first terminal (T c1) connected to a connection terminal of the third filter; and a second switch that switches between connection and disconnection of the third output terminal (T 3OUT) and a second terminal (T C2) of the circuit element; wherein the third filter has a frequency response that differs depending on a connection state of the third output terminal (T 3OUT) and the second terminal (T C2) of the circuit element. a first signal processing unit that includes a first input terminal (T 1IN), a first filter and a first output terminal (T 1OUT), the first input terminal receiving a first tone signal, the first filter processing the first tone signal to generate a first processed signal, the first output terminal outputting the first processed signal; a second signal processing unit that includes a second input terminal (T 2IN), a second filter and a second output terminal (T 2OUT), the second input terminal receiving a second tone signal, the second filter processing the second tone signal to generate a second processed signal, the second output terminal outputting the second processed signal; and a first switch that switches between a plurality of positions including first, second and third positions, the first switch being connected to the first output terminal at the first position, the first switch being connected to the first and second output terminals at the second position, the first switch being connected to the second output terminal at the third position, the first switch outputting the first processed signal at the first position, the first switch outputting the first and second processed signals at the second position, the first switch outputting the second processed signal at the third position, a third signal processing unit that includes a third input terminal (T 3IN), a third filter and a third output terminal (T 3OUT), the third input terminal (T 3IN) receiving a third tone signal, the third filter processing the third tone signal to generate a third processed signal, the third output terminal (T 3OUT) outputting the third processed signal, wherein the plurality of positions of the first switch further include a fourth position at which the first switch is connected to the second and third output terminals, and the first switch outputs the second and third processed signals at the fourth position, and a circuit element that includes a first terminal (T c1) connected to a connection terminal of the third filter; and a second switch that switches between connection and disconnection of the third output terminal (T 3OUT) and a second terminal (T C2) of the circuit element; wherein the third filter has a frequency response that differs depending on a connection state of the third output terminal (T 3OUT) and the second terminal (T C2) of the circuit element.