Before the flames begin and accusations cast, I am not posting this to try and tear down the KPA, I was challenged to back up my opinion that the Whammy V outperforms the new Kemper Pitch Effects, so here we go.
Now, let me also state that I think the harmonizer is kick ass and that overall it's a valiant first effort simply there's some room for improvement and that if polyphonic pitch effects are important to you then I still think the Whammy V and likely the EHX HOG/POG are better. However, for the casual user of pitch effects perhaps the KPA delivers a usable to good experience as it seems overall people have been praising them. Also, there's the chance something is wrong with my unit or the firmware update process and perhaps the effects perform better on others units. In each case you hear the dry guitar, the whammy engaged, then the KPA pitch effects engaged. In each case (IMHO) the whammy performs with less latency (some of the KPA sounds like a short delay is engaged) and more stability to the shifted notes. However 2 portions really stick out: where the KPA wasn't able to cleanly track a F#m7 chord and the very end when the KPA variable latency was so bad when pitch shifted down a 4th that it actually altered the rhythm of what I was playing.