The difference was night and day for me. M-scaler makes a huge difference when used with Dave in my system: Soulution amp, Magico S5 mk2, Synergistic research Galileo powercell, grounding, and interconnects throughout. I recently moved from Devialet expert 1000 monoblocks just because I wanted to listen to this Dave/M Scaler combo that used to be my headphone setup. Dave alone does not sound better than Devialet, but with M Scaler, everything changes for the better. Maybe your system needs to be highly resolving and dynamic to hear the improvement, but for me, M scaler for sure!