In 1973, Jim Fosgate made a startling discovery while working in his garage in Arizona, USA. Mr. Fosgate realized that music and the human ear have different audio properties. Mr. Fosgate invented a solution, the Frequency Energizer, which would later become the patented Punch EQ. The sound of THE PUNCH gave Mr. Fosgate’s first customers the impact that their music needed. Now that same PUNCH is the sound of Rockford Fosgate® and you can hear it in everything they make.