A regular single stereo cable with a pair of RCA plugs on each end is all you need to connect to the Nova pre/sub output.
If you need a very long lead, it’s possible that you would be better off with a ‘slugged’ cable (which means that it has a resistor fitted at one end) as some preamps need this. I don’t know if it would be required with the Nova - your dealer should be able to tell you.