The Audio Note Kits DAC 2.1C (roughly equiv to factory DAC 3 I believe) was truly a revelation to me after trying a number of DACs and CDPs, some up to 3x its price. The smoothness and timbre of the NOS/filterless topology with great dynamics and microdynamic finesse (something very many easy to listen to, "analog-like" DACs are missing).
Have never heard the AMR or the new db audio.
Vinyl is still better, substantially.