No. Optical cables were a nice idea, but most head to head comparisons lean towards RCA connections. Stick with what you've got. If it doesn't sound like what you're expecting, upgrade your RCA cables to something better. If you want to do this, yeah, I suppose Monster calbe would be fine. But searching out another brand like Canare or Tributaries will net you even better results for the same price. (Take a look at
http://www.audioadvisor.com)
Also, broadcast engineers are not audiophiles. Might be some desparity in our different definitions of audiophiles...!