Fulltone Gold Standard Guitar and Bass Cable
 "When a company with the reputation that Fulltone has for award-winning tones
and high-quality construction comes out with a something as simple as a guitar
cord, you can be assured they’ve put some serious thought and research into it.
The new Gold Standard 15’ cable delivers on its promise of improving your tone,  and that’s due to number of factors. See, all guitar cables have some amount of capacitance, impedance, and inductance, and manufacturers fiddle endlessly with these values to get the response they want.
Excessive capacitance in a guitar cord can degrade the high-frequency response,
and since capacitance is affected both by how close the conductors are to each
other as well as the length of the cable, to keep this value low, a cable should
be reasonably short and its conductors widely spaced. This may have something to
do with the Gold Standard being a little fatter than a lot of cables.
Capacitance, however, is only one factor that determines how a cable sounds, and
Fulltone has tailored the materials (such as oxygen-free copper wire) and
construction to also enhance the low and midrange frequencies.
  The Gold Standard does sound bigger and, dare I say fuller, than the other
cables I compared it to. It also seems louder (probably due to its ability to
pass signal more easily), and even my cables that were considerably shorter
didn’t measure up to the Gold Standard’s rich, meaty sound. The Gold Standards
feature two straight gold-plated steel connectors.The strain relief and stout construction of these cables portend a long and trouble-free life...."