Alright, so after the first few hours of listening, and doing A-B comparisons with my previous CD/DAC: The Esoteric K-01X is definitely a step up in CD performance, with much more clarity, a more precise sound stage, smoother, and richer texture / sound.
However, the SACD part is rather disappointing: the CD portion, and playing SACD’s as CD’s sounds phenomenal, but playing SACD’s as SACD’s sounds worse than my old CD/DAC. Confusing, but I’ve played with some of the filters, and SACD’s still sound pretty bad.
My system is Sound Lab M745, Lamm M2.2, Manley Steelhead, and now the Esoteric K-01X.