Several years ago, @soix gave me the same recommendation for the Satori cables. I had tried 4-5 others methodically before buying a pair of the AZ cables. Putting these in my system made me a believer, they will improve your system.
Same goes for a good preamp. I was using an NAD preamp and made a low cost upgrade to a Schiit Freya+, a very significant improvement. I have gone further up the chain since then, with more improvements. So yes, a good preamp will make a difference. And then some good interconnects…