Abstract: A system for automatically adjusting an audio system with a programmable parametric equalizer includes an audio analysis unit that can be connected to the audio unit. The parametric equalizer adjusts the frequency response of the audio system in response to equalizer data stored in the audio system. The audio analysis unit generates various reference signals and applies the reference signals selectively to separate channels of the audio system. A microphone picks up audible output of the audio system as the parametric equalizer corrects it and the audio system outputs the reference signal. The audio analysis unit, by giving directions to a user or by directly programmably addressing the audio system, changes the equalizer data, amplifier gain, polarity of speaker connections and other parameters responsively to the output picked up by the microphone. The audio analysis unit also includes a floppy disk drive to store the results of the adjustments.