Sorry for the confusion. This depends on whether tracking your entertainment center as a group is sufficient, or whether you want individual device tracking.
Entertainment center as a group- Get an HS110 (single plug) and plug your panamax into it. Leave your devices plugged into the panamax. Then the whole load (including the small consumption by the panamax) would be tracked together. Cost about $15, and Sense could track total power for that smart plug, called perhaps “entertainment center”.
Individual device tracking- leave the panamax plugged into the wall, but get an HS300 (six outlets for about $75), plug it into the panamax, and plug each device on the entertainment center into the HS300. That provides individual device tracking and control, and still integrates into Sense.
In both cases, you retain your two level protection, and gain power tracking.
BTW, while you have the DVR on a UPS (which makes “sense” to me , is that plugged into the panamax? If not, why not? If so, treat it like any other device in both of the scenarios above.