as the creator of the talk box, Bob Heil, explains, Peter’s girlfriend at the time knew he was fascinated with the talk box (going back to Alvino Ray and Pete Drake) and she called Bob (who was the sound system provider) and asked if he had one she could buy for a birthday present for Peter. Bob gave her one, and the rest is history.
I bet he sold a boatload of them because of Do You Feel Like We Do.