I auditioned upgraded cables tehy were Shunyata Venom NR…. The impact was improved dynamics and details. And one of the sonic effects was the improved detail and control of lower frequencies - I think the cables reduced noise entering the compound thus creating a lower noise floor.
I started with source and there was a similar impact on my amps. I bought all at the same time.
If you can audition- I’d be curious on your experience…enjoy the process.