World’s Second Cheapest and Most Effective Tweak

The world’s cheapest and most effective tweak is, of course, correct loudspeaker placement (it’s actually free). The second cheapest and most effective tweak is keeping the contacts in your audio system clean with Caig DeoxIT contact cleaner. Formerly called Caig ProGold, DeoxIT (or DeoxIT Gold for gold-plated connectors) removes residue and promotes better electrical contact between plugs and jacks. Many high-end manufacturers routinely treat internal connections (jumper pins, ribbon cables, tube sockets and pins) with DeoxIT at the factory as part of the manufacturing process.

I suspect that some improvements listeners report after changing interconnects are actually the result of inadvertently cleaning the plugs and jacks mechanically by removing one interconnect and connecting another.