Look at products by Equi=Tech, Torus Power, Furman and Balanced Power Technologies (BPT).
http://www.equitech.com/products/rack/modelqav.html
http://www.b-p-t.com/
http://www.furmansound.com/product.php?div=02&id=IT-REF_20i
http://www.toruspower.com/
http://www.equitech.com/products/rack/modelqav.html
http://www.b-p-t.com/
http://www.furmansound.com/product.php?div=02&id=IT-REF_20i
http://www.toruspower.com/