Assembling a cable is very easy. However, I used the 3rd opening in the cutting tool to get a proper result.
In terms of sound, there is actually a lot of noise. I mounted an approx. 8 cm long cable first in the chain on my pedal board - Between the tuner and the compressor. The result was a clean signal with a lot of noise. I returned to a "Core X2" cable and the noise was gone!
After the compressor, the cable seems to be just fine.