Is your source digital? You might want to try a re-clocker (DDC) in front of the Devialet. The difference in sound can be pretty dramatic.
Also with cables, including the link cable between master & companion - the differences can be huge, also trying RCA-XLR vs RCA-RCA. In Singapore, I bought a handmade RCA-XLR converter from Coherence Audio at Adelphi (the shop with the MBLs). I just to test what the difference would be by using my existing RCA-RCA cable. It worked well, and I've stuck to using it ever since. Got a more 3D soundstage and more natural sounding highs.
Also with cables, including the link cable between master & companion - the differences can be huge, also trying RCA-XLR vs RCA-RCA. In Singapore, I bought a handmade RCA-XLR converter from Coherence Audio at Adelphi (the shop with the MBLs). I just to test what the difference would be by using my existing RCA-RCA cable. It worked well, and I've stuck to using it ever since. Got a more 3D soundstage and more natural sounding highs.
Devialet 1000 Pro CI - AQ Diamond AES RCA-XLR Link
PC - ifi iDefender+ - FIBBR Alpha Optical USB + "Studer 900" LPS - Singxer SU-6 - AQ Diamond AES
PSB Imagine T3 - AQ William Tell Zero / Tornado / DBS Level-X - PliXir Balanced AC