The Sapphire Edition is the most sophisticated member of the Husserl sequencer family. Currently, newer versions are all feature supersets of older versions. The three main versions of Husserl have the following primary differences:

• RAINBOW (Husserl v0.97) ~ Single channel MIDI output.
• EMERALD (Husserl v0.98) ~ Core and panel redesign for complete multichannel output and low CPU requirements.
• SAPPHIRE (Husserl v0.98) ~ Banks, snap chaining, note transformations, snap demos, and feature completion throughout the instrument.