Yes, the CDT3 is in fact one of the best sounding sources available at any price. Just the truth. The CDT2 is quite good, but the CDT3 is audibly better still. Part of that must be the CLK and its PSU, it is one of the finest they can produce and occupies the whole R 3rd of the unit.
We tried hard to beat the CDT3 with various expensive streamers (eg Rockna, Lumin, Naim, Esoteric, etc) and have not been able to. Also, we tried master CLK'ing the CDT3 and the sound changed slightly but did not improve.
With all due respect the CDT2 and CDT3 do NOT sound identical. If you want the best sound you can get the CDT3 is the better path vs the Mk2-?Mk3 upgrade. Thanks TK