APC Line R 1250, Is it Hazardous?

I have heard from a member at this site that the APC Line R 1250 power conditioner/stabilizor, designed for computer use, is also a good unit to use for Hi-fi. I own one of the units myself and use it on our computer. In some or the power conditioning threads there have been warnings that "most" computer power conditioners will damage delicate Hi-fi gear due to them putting out a different type of wave (square wave I believe) and because of these warning I have been afraid to try out the unit on either of our Hi-fi systems. I am also not very technical and would not know what to really ask if I were to contact APC directly. Can any of our technical members familiar with the unit confirm that it is safe to use with Hi-fi gear? If not, then what exactly would I ask APC if I were to contact them? Thanks.