Illuminations Orchid or Analysis Plus Digital Oval are both phenomenal. Make sure you get them long enough so that all turns can be very gentle, but no longer than needed.
The best digital cable that I tried between Classe DAC1 and CDT1 was the Illuminations Orchid. I tried many before coming to that conclusion. Huge presentation of detail without being analytical. An amazing soundstage. Often available on Audiogon at rather reasonable prices. Good Luck.
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