After years with the built-in DAC in our tube Jolida JD100 CD player and decades with our Quad amp/pre-amp, we bought an Audio Note Cobra tube integrated and started using its DAC with the same Jolida tube player. Light years in difference in detail! We then splurged and purchased an AudioNote CD 3.1x/II player with its built in DAC. Again, light years ahead of the DAC in the Audio Note integrated amp, and got bonuses of tighter bass, specific sound stage placements of instruments, and amazing sound at low volume. We could A/B every stage with our Quad ESL-57s, and the differences were dramatic. We are now set. I can't imagine any better.
