Articles in this category Can I use the CAT Tails with the CAT Rack or CAT Box? Absolutely! All of the RATCAT family will work together, bringing audio over CAT to the places you need​ it most. Connect CAT Tails to CAT Box or CAT Racks and route your audio where you want. Do I need to use a shielded CAT cable with the CAT Tails? Yes. Each of the channels share a common ground. This is especially important with digital signals. See more here.