I can only speak to the Lumin. I have owned the D1, A1and now the X1. I ended up selling my Emm Lab Dac after getting the X1. I had a Raven Integrated Reflection MK2 amp and SF Amati Tradition Homage speakers. People who came to my house were amazed at the quality of my sound. My whole music library is digital and I also used Tidal. The ease and simplicity of the Lumin ap is what initially sold me on Lumin. Each iteration I went to improved the sound dramatically.
Lumin X1 or dCS Bartok
Both of these beasts look like they could be that “forever purchase”. These are basically the newest offerings from both well respected companies and are within spitting distance of each other price wise (without the Bartok headphone option installed). Anybody heard both and able to comment?