In the words of Electro-Harmonix:

The worlds best octave effect just got better! The POG3 is the most powerful pedal in Electro-Harmonixs revered line of polyphonic octave generators that continues to inspire and captivate musicians of all styles. At its core, the POG3 delivers lightning-fast tracking and perfect polyphony over 4 octaves with smoother tone and performance than ever before. From 12-string jangle to 6-voice drawbar organ sounds, the POG3 delivers an endless possibility of tone creation. The pedal has received many updates that further expand its tone shaping possibilities to enhance your performance on stage and in the studio.