I'm using Blue Heavens (pre-amp) and HomeGrown silver (dac-pre) cables with a CJ/ProAc 2.5 system and have had great luck with them. Both cables are relatively neutral and seem to match well with the overall warmth of the system.
Have you tried the Blue Heaven interconnects? I would think that they would work well. Others that I have used and like include Pure Silver Sound and Audio Magic. The exact models would depend upon how much you want to spend.
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