For my SimAudio 380D DSD DAC, I use the following 2 cables:
Audience Au24 SE+ USB Cable (their newest USB cable)
Kubala-Sosna Emotion AES/EBU cable, Balanced XLR
I prefer the AES/EBU cable for most of my listening since it sounds the best. The Kubala-Sosna Emotion Is the best cable I have ever used and is well worth an audition. I immediately noticed an improved sound quality when I installed this cable. It is expensive but, IMHO, is well worth the cost for its improved sound quality.
I also use the Kubula-Sosna Expression Interconnect Cable (2 cables), balanced XLR connection between my SimAudio DAC and SimAudio 600i V2 integrated amplifier.