Won’t comment on if you do or don’t need a DSP. I’ll leave that to others who seem to know your system better than you do! ;-)
I just integrated the DDRC-22D into my system and for my room, my limited ability to treat, and my configuration it was probably one of the best additions ever. It just “brought everything” together.
I believe the ability to tweak the response curve was a definite improvement, but the adjustment to the impulse response probably made the biggest improvement, noticeably to the soundstage.
Good luck!
I just integrated the DDRC-22D into my system and for my room, my limited ability to treat, and my configuration it was probably one of the best additions ever. It just “brought everything” together.
I believe the ability to tweak the response curve was a definite improvement, but the adjustment to the impulse response probably made the biggest improvement, noticeably to the soundstage.
Good luck!