CCA wire is a copper-clad/aluminized aluminum wire. This is an aluminum wire with a very thin copper coating. At first glance, it looks the same as pure copper wire. The price may seem attractive, but remember that the conductivity of aluminum is only 60% of copper. This means that to withstand the same load, you must use a thicker wire gauge, which can save a lot of costs.
The quality of the wire will vary, which will affect its ability to conduct electrical energy to transmit power and audio signals to the device at the same time. Automotive inventory electrical systems are designed to handle very specific loads, and when you start upgrading audio equipment, this puts more pressure on the line, so you need to upgrade to a smaller specification. However, rubrics cannot always tell a complete story.
Copper-clad aluminum wire can look the same as other copper wires because it is actually aluminum and coated with a thin layer of copper. You need to look at it frontally to see the aluminum in the middle. It is cheaper than a wire made entirely of copper. It is also lighter than pure copper wire. Compared with wires made entirely of aluminum, CCA has better conductivity. Copper coating helps, but it is still not as good as pure copper wire. It is also stronger than pure aluminium Magnet wire, but weaker than pure copper wire.