A Lyngdorf DPA-1 digital preamp with RoomPerfect room correction could well work wonders in a room like yours.
I use one in my large-room system that has a high vaulted ceiling and openings to a hallway, stairway to 2nd floor, and a kitchen opening (all on the same side of the room). After setting up the RoomPerfect EQ by taking multiple measurements with the included microphone around the room and in the sweet spot I am now amazed at how linear the system sounds and how outstanding the imaging/soundstaging turned out to be.
I know I could not have gotten the same results with any amount of Bass traps and/or passive room treatments. Best of luck to you.
I use one in my large-room system that has a high vaulted ceiling and openings to a hallway, stairway to 2nd floor, and a kitchen opening (all on the same side of the room). After setting up the RoomPerfect EQ by taking multiple measurements with the included microphone around the room and in the sweet spot I am now amazed at how linear the system sounds and how outstanding the imaging/soundstaging turned out to be.
I know I could not have gotten the same results with any amount of Bass traps and/or passive room treatments. Best of luck to you.