If you are eager to get the most out of your system, there are mainly two things to consider for an RCA interconnect:
• Low Capacitance – Capacitance is by far the most important factor for an interconnect cable since your load (in this case the power amp) has a very high input resistance. This makes the current very very low in relation to the voltage and therefore you want to keep the capacitance as low as absolutely possible so that the current doesn’t disappear to a neighbouring wire and/or the shielding.
• Shielding – Shielding has mainly two purposes. It shields from external interference (often less important if you keep your wires nice and tidy and avoid high interference zones). Additionally it carries the “earth” signal (“null” voltage). However, if your “earth” is not good enough in your equipment there can be a residual potential difference between your components which will travel in the shield (
further technical reading). To partially resolve this, it is highly advisable to have as low resistance as possible in the shield.
However the tricky part is that a heavier shielding normally render in higher capacitance. Both
this and
this company have high quality interconnect cables that addresses this problem in their design. I have tried both brands with good results.
