In addition to above, what type of connection does the re-amp box use for its input(from the 002)? If its balanced, you could try cutting the shield connection at the input of the re-amp box(which might sever the ground loop). Another option is to insert an isolation transformer between the 002 output and the re-amp box input. And one more possible solution would be to power all the gear from a single power outlet.
Last ditch idea, if the re-amp box input is not balanced, build a special cable. Use balanced cable and wire a TRS plug(for the 002 output) normally, but at the other end(that connects to the re-amp box), use a TS plug with the hot to tip, the cold to sleeve, and do not connect the shield at this end. This "floating" shield will do its job, but having no connection at the re-amp box, the ground loop is broken
(a "floating" shield only connects to ground at one end)