Where is the weakest link?

So whats the priority in fixing the path between the ugly utility pole and the speaker connection point? Dont say all the above.  My system is revealing so i need to give this area serious attention.

between amp and speaker,
processor and amp,
dac and processor,
dac and streamer,
router and streamer
Etc

i have thick interconnects, some better than others, but not the cheap stuff, have spent alot on cables to speakers, including center.

ethernet segment dont excite me due to self correcting process that oversees packet delivery.

i dont use balanced and probably should.