I haven't compared the 2, but will say, you can't go wrong with the Ruby, I love mine. I kind of wish it had xlr outputs like it's big brother the Marantz SA10, but it wasn't a deal breaker, especially at the cost.
Marantz SA-10 replaced my Esoteric K-01. Never looked back. SA-10 is that good sonically, well worth the money. I use XLR outs. settings, Dither 1, Noiseshaping 3-1, headphone amp off, Gain set to low (does make a difference for some reason, mid is OK, but low is more details). Sound s best ofter being on and in use for a few hours.
Can’t offer anything about the Denon, but FWIW very happy with the Ruby. Tremendous improvement over the Oppo 105, and functions as a very good DAC for me.
You must have a verified phone number and physical address in order to post in the Audiogon Forums. Please return to Audiogon.com and complete this step. If you have any questions please contact Support.