Digital Room Correction For Speakers


Any suggestions for a digital room correction device which is easy to use. Or is it better to buy a pair of speakers which has the system built in such as Vandersteen. Any feed back is appreciated.
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One thing I believe is that active room correction actually means different speakers can compete in the same room on a more even basis. You hear that the difference between speakers after correction is actually less than before, which means the room interaction on different speaker accounts for the main difference in sound. You can now concentrate on dynamics, resolution, tonal qualities, edgeness etc that is left.
Can the DSpeaker X4, be used strictly for room equalization and not as a preamp or dac?