I’m a Rotel fan so I’m sure both components would be great. However, as both the amp and transport each contain a DAC I question whether they’re designed to go together. That, to me, would make one DAC redundant.
I would suggest the DT-600 is designed more to go with a separate amp/pre-amp combo that doesn’t already include a DAC. Although, as all of Rotel’s pre-amps and integrated amps appear to contain DAC’s, unless the DT-6000’s is noticeably better, I don’t understand why they included a DAC in it at all...