Portable information recording/play-back arrangements, wherein a controller judges whether a mode, controlling a first recording/play-back module and second recording/play-back module, is an imaging mode or a dubbing mode, and wherein when the controller judges that the mode is the imaging mode, the controller controls so that the imaging module and the first or second recording/play-back module operate on battery or a power supply from an external power source; and when the controller judges that the mode is the dubbing mode and the first and second recording/play-back module operate on the power supply from the external power source, the controller controls so that the dubbing operation is permitted.