This doesn't help in every system, but this made a very audible improvement in my system. You need a voltmeter and a cheater plug(s) that will let you orient the ac plug(s) in either standard or reverse polarity. I made my own and used a grinder to remove metal from the thick sides of the ac adapter plug. Test the chassis voltage by touching the hot lead of the voltmeter to bare metal on the component chassis and the ground lead to a ground. Orient each component plug in the manner that gives the lowest voltage reading. I only had to reverse my cd player (Cambridge Audio CD4se.) It REALLY tightened up and extended the bass noticeably. Midrange sounded a touch more coherent and integrated.
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!