Good cables for a Krell system?

I am looking for new a set of speaker cables and interconnects for my Krell system. I have Nordost Red Dawn (rev2) at the present but I find them too harsh in the top end.

Any suggsestions would be great!

Pre-amp: Krell KRC
Power amp: Krell KAV-500 (4 channels used to bi-amp speaker)
Speakers: Aurum Cantus Volla
Record player: SME 20/2 with Lyra Titan i
Phono pre-amp: Whest PS.30 RDT SE