Tributaries Cable is known for audio, video, and custom-installation Home theater cabling. The company released now an AC Power Manager dubbed TX500.

The Tributaries TX500 offers high-end surge suppression and noise filtering of AC power. It supports 10 components with a cumulative demand of up to 1800 watts.
Silicon-avalanche Diodes are used for the surge-suppression. SADs are not degrading over time.
AC noise filtering is performed by three filter pairs that filter on both 'legs' of the AC line. Each AC outlet can be programmed for different devices: always on, immediately on and 5/10s delay useful for high-current components.
The Tributaries Cable’s TX500 Power Manager is now available, at a manufacturer’s suggested price of $750.
More details on the Tributaries site.