I too use Acourate. Phase and time alignment does wonders to the soundstage (for me, they are much more important than frequency response correction). Playing with YG Sonja 2.3.
My step response is not as good as yours, but it sounds pretty damn good. Not a single person that comes to listen prefers with DSP off.
Everybody in this hobby should have a word with Uli and Mitch.
Step response before
And after
Phase response (up to100hz) before (notice out of phase response in low bass)
And after (everything in phase)
And here is the room reverberation. Even professionally treated rooms benefit from DSP
