I am a very satisfied owner of the Ergo.
It only addresses/corrects up to 500Hz, so if brightness is your issue than you need to look elsewhere most likely although I suppose corrections in the lower frequencies could give the listener the impression of less brightness. The Ergo also asks for numerous specific microphone placements to take measurements. There should not be much experementation with mic positioning. (Although if your results were poor I can't blame you for trying)
In my room it worked very well. The bass became much more solid and imaging greatly improved since it does level matching. The fact that is is also a very good sounding DAC is the icing on the cake.
It only addresses/corrects up to 500Hz, so if brightness is your issue than you need to look elsewhere most likely although I suppose corrections in the lower frequencies could give the listener the impression of less brightness. The Ergo also asks for numerous specific microphone placements to take measurements. There should not be much experementation with mic positioning. (Although if your results were poor I can't blame you for trying)
In my room it worked very well. The bass became much more solid and imaging greatly improved since it does level matching. The fact that is is also a very good sounding DAC is the icing on the cake.