Can the stereo be equipped with an invisible camera?

I can't. The camera can't connect the speaker, which is directly related to the working mode of these two devices. As an image recording device, the camera shoots with the lens, and then saves the video data in the hard disk for playback and viewing. The speaker is a typical audio device, and you can play music by connecting it to the host through an audio cable. The camera can't be serialized on the speaker.