Dont just make your system louder - make it clearer. Make it better. ^^ Press the selector, and the microphone goes to work. The KEY uses a powerful internal computer to deliver dramatic improvements in realism and soundstage. ^^ A massive 40-band equalizer improves tonality, and a 24dB crossover re-defines the capabilities of each speaker. ^^ The concert quality of your factory stereo is revealed! What would take hours for a professional to achieve happens in a matter of minutes.