All I can tell you is the Rotel uses separate Burr Brown PCM-63 mono DAC chips (one per channel). While these are 20bit chips, they are/were the best 20bit chips made. Therefore, the best 20bit chip will trump a lesser 24bit chips easily. They are still one of the most analog sounding DAC chips made ever.
The 991 will also decode HDCD.
See reviews here..
http://www.hifichoice.co.uk/archive/perl/304_printreview.htm
http://www.hifichoice.co.uk/review_read.asp?ID=1172
A review on the Arcam is here...
http://www.hifichoice.co.uk/review_read.asp?ID=1163
The 991 will also decode HDCD.
See reviews here..
http://www.hifichoice.co.uk/archive/perl/304_printreview.htm
http://www.hifichoice.co.uk/review_read.asp?ID=1172
A review on the Arcam is here...
http://www.hifichoice.co.uk/review_read.asp?ID=1163