Interconnects and non-believers

+1 @geoffkait 

Use your ears (they are the ultimate measuring device) and open your mind.  If you still don't hear a difference then congrats -- you'll save a bundle.  

+1 elizabeth

pc997:
Blind (or deaf) faith in science without considering  observable phenomena  is dogma and patently  unscientific!

Is there boutique cabling inside your components?

No.

You should go check out what cabling is used in multi million dollar recording studios by master mixing engineers. The market is more or less owned by canare at a dollar a foot carrying weak microphone signals over hundreds of feet of wire. If it's good enough for them, it's good enough for me. I have a hundred bucks of cable in a $25K office setup. For all intents and purposes, audible audio signal might as well be DC as far as physics is concerned.

There are none so blind (deaf) as those who will not see (hear.)