Have you ever wanted to disguise your voice on the phone so that no one will know who you are? Well now you can. Simply connect one of Spy Inc Store's voice changers to your phone and 'voila' no one will know who you are. A voice changer can be great fun or be used for serious business. These units can make a woman sound like a man, a child sound like an adult, etc. These are some of the coolest voice changers available.