Analog audio cables differ from their digital friends in purpose
alone. The same cables that work well for your coax digital connection works
just as well for any other audio/video 
connection, provided it is a 75-ohm
cable. Unlike digital signals however, the cable used can color analog signals.
The changes made by analog cables are subtle at best and
with most systems, no difference can be detected. Audiophiles spend years
finding the perfect cable match for the sound they desire, be it warm, flat,
expanded bass or any number of other characteristics. For those of us on a
budget however, spending a thousand dollars a foot on cables won’t noticeably improve
your sound.
You do want quality interconnects however but you don’t need
to spend a lot of money, you just need to make sure the cables are well
constructed, 75-Ohm, shielded models. I prefer the custom cables from Blue
Jeans Cables, and in case you were wondering, I have no affiliation with
these good folks, I just love their products and for the money feel they are
the way to go.
Monster
Cable, as I have stated before are well built and reliable but you pay a
heavy price to cover their marketing and they are simply, very overpriced. Don’t
spend any more than necessary on analog cables, just make sure they are 75-ohm
and well shielded to avoid signal crossover to other cables and avoid picking
up noise from power cables and RF signals in your home.
Speaker cables are where I am willing to spend a little more
but I don’t go crazy. I only use 12
gauge, oxygen free cable in my main system. That may sound expensive but the
bulk cable found at Home
Depot is high quality and inexpensive.
If you must go to a smaller gauge, never go below 16 gauge.
If you have a large room where cable runs go beyond 20 feet, I wouldn’t try
anything below 12 gauge unless there is simply no way to use it.
Choosing
Digital Cables