In my experience, the colorations of cables are very often additive -- the expression "too much of a good thing" can apply here. That's why I mix and match cables. Other 'philes and reviewers may disagree, but I have had to do this consistently over the years to achieve my idea of sonic neutrality. I don't know of any cable that's completely neutral, do you??
Cumulative Effects of Cables?
If one is useing a specific interconnect cable between a cd player and a preamp and that cable has a certain "sweetness" - then when you add another identical interconnect between the preamp and the power amp, does the new interconnect add more "sweetness" or is the sonic effect limited to the sound the cable produces on its own? Can anyone comment on this subject?