Galen Carol writes .....
"The magic is in the details. Nowhere is this statement truer than in the context of a high-end audio or video system. Many fine systems perform at sub-optimal levels due to a few overlooked details. I can’t tell you how many times I’ve heard a collection of superb equipment fail to live up to potential, the result of a few minor problems. Careful attention to set-up details can pay hefty dividends, rewarding the listener with significantly enhanced performance. Often just an hour or so of effort can bring improvement equivalent to replacing a component!
Those who have been around the hobby for a while are likely familiar with many of the items on the list to follow. If that is you, then consider this a gentle reminder to carry out the routine maintenance you may have been putting off. If you are a "newbie," then I think you’ll find below a number of ways to easily (and substantially) improve system performance, for little or no money.
Pay attention, class, your homework assignment follows."