@guitarlenn55 - if your system in on the budget end of the scale - use it on the Source components
Budget oriented source components tend to have poorly designed power supplies so good cables will pay more dividends, whereas the amp will have a more substantial power supply. so the cable will not have the same impact
The further up the scale you move then you have to spend a lot more on a power cables to make a similar impact on a source or amplifier
Regardsw - Steve