The technology behind the Richard Gray's Power Company (RGPC) $2,000 1200s product is very simple. Inside a heavy-duty chassis, there are two 6000-watt parallel chokes, which provide about the most significant surge protection money can buy. Reportedly, not one of Richard Gray's Power Company devices has ever been destroyed by a power surge or even a nearby lightning strike. Unlike some of the more power strip-oriented power devices, Richard Gray's Power Company products are built with the ultimate fuse. In technical terms, it's called an MOV. Some other $2,000 power conditioners use a Radio Shack-style fuse that, once it blows, leaves your system open to anything and everything the power grid has to throw at you. With an RGPC device, the MOV is gigantic, with metal and spools of wire. No wonder this product doesn't fail.Performance-wise, the RGPC 1200 "Custom" offers the aforementioned surge protection, but audiophiles report being able to get more efficiency from their tube amps. Videophiles report being able to get slightly better blacks from their projectors. With AC power, performance improvements can be incremental. However, it has been suggested that the ever-so-small reserve of power in the large chokes of the RGPC 1200 allow for just enough reserves of power for many products to work better.