The Megaphone is "plug & play" and amplifies the sound from the speakers on your iPhone or iPod touch
Have you been looking for a speaker system for your iPhone? How about a giant megaphone instead? Not unlike the Horn Stand Amplifier on steroids, the appropriately named "Megaphone," is a giant horn that will amplify the sound from your iPhone in a way that's bound to turn at least a few heads. Essentially just a giant megaphone, the horn's design amplifies the sound from your phone rather than a speaker system, with the actual volume control being taken care of on your handset rather than on the horn.