When looking at the blurb for the P3 under Products/Regeneratrors, if one selects Want More Info and then starts reading the Overview there’s a paragraph as follows:
The P3 includes 3 separate zones delivering 300 watts of pure continuous regenerated power, 500 watts of short term power(up to 30 seconds), and dynamic peak power (3 second or less) of a whopping 900 watts for explosive dynamics. From small to medium power amplifiers to all your source equipment, the Stellar Power Plant 3 will work magic on your system’s performance with pure, regenerated power. The Stellar 3 also includes up to 1000 watts of filtered and protected power for larger power amplifiers.
Apparently there are only two zones in a P3, HC/Regen and the remaining 4 or 6 outlets.