PURPOSE: To prevent a malfunction at the time of inter-music detection by a set mode from being generated, by controlling a device so that the mode of an equalizer amplifier can be switched to a prescribed mode in spite of a tape mode set in reproduction at the time of the inter-music detection.

CONSTITUTION: When a switch 8 or 9 is operated in program searching reproduction, a microcomputer 1 sets always the tape mode of the equalizer amplifier 3 at a normal mode regardless to the mode set in the reproduction. An inter- music detection circuit 4 detects inter-music by an inter-music level corresponding to the normal mode, and supplies a detected signal to the microcomputer 1. Since it is possible to always perform the inter-music detection corresponding to the normal mode regardless to the mode set in the reproduction by performing such operation, a remarkably stable inter-music detecting operation can be obtained. Also, the setting of the mode in the inter-music detection is set as the normal mode, it is permitted, of course, to set it as a metal mode.