The cheapest way to upgrade any system is inter-conects
they will get so much more out of any system it's incredible. For a mid level system and below I recomend Kimber Cables PBJs they are incredible for the money. I have demo'd them against cables twice the price and the difference is so negligable that I still use them. This goes for speaker cable as well. I will have a pair of six foot Audio quest type 4's that I will be getting rid of cheap very soon.
bring those speaker cables to Denver for sts9...