Here is what I found from the forum include the above reply from @WTree and @Damon:
220 Pro:
* Better midrange.
* Better Base control with more bottom end energy
* More details in highs and lows compared to D120
* Better imaging and dynamics
Kai
220 Pro:
* Better midrange.
* Better Base control with more bottom end energy
* More details in highs and lows compared to D120
* Better imaging and dynamics
Kai
Devialet Expert 220 | SF Electa Amator II | Nordost power & speaker cables
Devialet Expert 120 | B & W speaker on Home theatre system
Devialet Gemini | Vancouver, Canada.
Devialet Expert 120 | B & W speaker on Home theatre system
Devialet Gemini | Vancouver, Canada.

