Two things improved the overall sound quality dramatically. I re-terminated the speaker cables, replacing the spades with the locking banana plugs. (if your amp has some fancy binding posts with a large contact area for the spade you don't to need to). Another thing I did was to move the speakers away the back wall. By the way I noticed that the OP started this thread 16 years ago. Wow.
Know of a "Dirt Cheap" tweak?
I am looking for tweaks to improve the overall sound quality of my audio system. I recently purchased some TPC contact cleaner and it made a believer out of me. I noticed a signicant improvement, as if a veil was lifted my system sounded more clear and transparent. Bass got tighter too. Do you know of any cheap tweaks that have made a SIGNIFICANT improvement to the sound quality of your Hifi system...let us know... :-) Comments welcomed!