I’ve now seen at least 3 devices that claim to put a voice in the spectator’s head. This thing is a device that anyone can buy but some unethical “magicians” have decided to repackage it for hundreds of times more than they are worth because of their “secret”. If you could turn anything into a speaker then you now have all the keywords to search for the device and save yourself a thousand freakin’ dollars. Hell, an expensive device will still only be $50 at most I think.