The Pa900 sound engine uses double the PCM memory of the best-selling Pa600, and extends the amount of User PCM to 192MB. The number of user style locations has also expanded, and the new features are complemented by an intuitive user interface and an array of features such as a TC Helicon Vocal Harmonizer, an MP3 player & recorder, a Dual Sequencer with crossfader, and video output to display son