I have listened to both extensively side by side and I own both players (Capitole Reference). Both are superlative players, however if I had to pick only one, I would choose the Aurum. I have listened to both players in a variety of systems including Edge and VAC electronics, and SF Stradivari's and Hansen King's. We have put the Aurum, Cap Ref and DCS P8 head to head in these systems, and fairly consistently the Aurum edged out the other two players. I don't claim to know why this difference exists, but I suspect it has do with the tube output of the Cap ref versus the solid state output of the Aurum. Again, these differences are not major, but among the 4 of us listening at the time we all preferred the Aurum. The Aurum is more detailed, has a more tight bass response and overall was more musical. The Cap ref has a more bloomy bass response and is not as detailed in its presentation. It is an appropriate choice for an all solid state system.
Another player on par with the Aurum is the Audio Research CD7- outstanding, but I don't need another CDP!
Another player on par with the Aurum is the Audio Research CD7- outstanding, but I don't need another CDP!