Mr D- Every cable/wire in your system is important. Between every component; your signal is transferred and there are a plethora of nuances that can be lost and have a profound effect on your presentation. Imagine viewing a very high-def 3D movie, through a number of glass panes. If one of those panes was dirty or otherwise distorted the image: would it matter which one? I fully agree with Almarg about ditching the optical cable. One caveat there: don't buy a digital cable shorter than 1.5M(digital reflections being the demon to avoid there). My last was a Kimber Orchid, which if I were to ever need one again, I'd try to find. An inexpensive starting point would be the more basic Kimber, Analysis Plus or Synergistic Research lines of interconnects & speaker cables, just to see if your system will resolve the differences. The Cable Company can provide good advice(based on your components) and sets, at a nominal rental fee, for your testing/tasting. Found here: (http://www.usedcable.com//default.aspx)