We believe the more neutral a connector is, the better - they should have as little resistance, inductance and capacitance as possible. In this sense, a superconductor (or air) would be the best connector, provided that your components don't need fixing -- that they are neutral also. There are some 300 manufacturers of speaker cables and interconnects. Some can be discounted offhand, because the cable construction is poor. But that still leaves quite a few. Since no cable is completely transparent, with no capacitance, resistance or inductance, all cables will affect sound reproduction somewhat. In turn, we can expect that certain cables will work better with certain components, actually making them sound better. This is most often because the cables are actually correcting a limitation in the components themselves. The good news: the components we offer are differential balanced. You can use microphone cable for connectors from Radio Shack or Mogami and get great results. No need for expensive interconnects -- or speaker cables for that matter. Our speakers come with heavy guage, teflon-coated copper speaker cables -- no extra charge. These can be bought separately -- a real deal.
This is not the case with power cords and power conditioners. We have found that these devices often cause more problems than they solve and cannot recommend any. Heavy guage power chords that are well insulated that you can find at your local hardware store and a good surge protector like Brick Wall is all that is needed, in our opinion, to be safe and sound.
Save your money on expensive cables, connectors, power chords, power conditioners. We don't need them to get "best of class" sound. You shouldn't either.