TalkStar - The world's best talk box designed just for keyboard players.
How Talk Boxes Work | HowStuffWorks
TC Helicon | Product | TALKBOX SYNTH
MXR M222 Talk Box with Built-In Amplifier Bundle with Blucoil 2-Pack of 10-FT Straight Instrument Cables 1/4in, 2-Pack of Pedal Patch Cables, and 4-Pack of Celluloid Guitar Picks - Walmart.com