Abstract: There is provided an effector for providing a musical tone with an effect such as a delay, a reverberation, a chorus and the like. The effector is capable of providing a feeling of listening such that the direct tone and the effect tone unites with each other, and in addition providing a feeling of expanse effective in a sound field. An effect tone signal is divided into a low register component and a high register component. The low register component is mixed with a musical tone signal (direct tone) entered through an input terminal and then outputted. The high register component is outputted in the form of stereophonic signal as it is.