One of my early jaw dropping experiences in audio were with digital cables. I had already learned how important they were to optimize the analog components. Around 1990 I had a two box CD player. I happily thought, finally a cable that will not matter, it’s digital. But I am a scientist and it comes out, I wanted to prove to myself it didn’t matter. So I borrowed a decent quality digital interconnect. I remember the feeling of complete embarrassment as the first few notes were played… it sounded like someone had come in and upgraded both component boxes with much higher level ones. I was just speechless. Also, what a screaming deal it was… while expensive… nothing like it would have cost to upgrade the player and DAC.
Some components are highly dependent, some less so. Good quality equipment require carefully chosen interconnects to get the best out of them