Richard Gray's RGPC 400S Power Supply

This is a power supply that is known to improve very high end audio system and home theaters. We used it in a studio for guitar amplifiers and computers but my understanding is if you have a high end home theatre with a great TV it can help improve sound and picture. And of course there is surge protection.

From manufacturer: The Richard Gray's Power Company 400S, "effectively 'positions' audio, video, and home theater equipment 'electronically closer' to your utility company transformer, without introducing any type of series electronic 'traps' or capacitors into the circuit, which we feel degrade the performance of certain equipment, and severely limit the amount of current they can handle." 

They go on: "Richard Gray's Power Company increases the dynamics and performance of audio systems by providing a short-term supply of high current on demand to satisfy power-hungry transients required of the AC line by your stereo equipment." They cite the 400S's "unique ability to 'fill in' the AC line when demand momentarily overcomes supply," and explain that it "tends to 'even out' small line anomalies. This electronic flywheel 'fill-in effect' enables Richard Gray's Power Company to suppress or quench the back EMF or 'fingerprint' of the equipment connected to it." The 400S also "quenches AC line noise caused by internal crosstalk between digital and analog electrical devices within the circuit," and is said to "greatly improve" home-theater systems.