the Epos tend to get sharp/edgy/hazy/shrill
This is a characteristic with Epos. Been through this with B&W. While I tried all reasonable solutions (including covering all the walls with blankets), in the end I found no good solution in adding one error to compensate for another. It was a bitter pill but had to dissolve the entire system.
If you must keep the speakers, Creek CDP and amps are voiced well for Epos, all being from Mike Creek's company, and this is the best I heard from Epos.
Other option is to buy an equalizer.