What are your opinions of DSP's for speakers

@atp001  it is impossible to have the perfect room but it is possible to get as close as you can. And that is done with targeted treatment. Using treatment you'd need and not just placing them anywhere in the room. Good speaker/room coupling with SBIR effects taken into consideration, subwoofer integration where necessary and then top that with good and sound DSP implementation and you have as perfect of a space for audio as possible

++ @mikelavigne re: DSP being a tool and the tradeoff being musical essence.

Personally, I find the tradeoff acceptable in the lowest frequency ranges (say under 300 Hz or so), combined with judicious placement and integration of subs, where room characteristics due to resonance -- not reflections -- must be dealt with. I’d rather deal with reflection issues through room treatment. I optimize as much as possible of the low frequencies using placement and phase controls on the subs, leaving DSP to do the "finishing touches." 

I have also found, for my situation, the DSP (either or both of PEQ and convolution filters) in HQPlayer to be superior to that bundled with Roon. I personally found Roon’s DSP to suck too much life out of the music. That may have changed over time, since Roon has made improvements, but I’m happy with what I’ve got with the combo of Roon plus embedded HQPlayer.

My Weiss DAC has excellent DSP available if wanted which I find very useful in some instances.  Typically I leave it all off, but I really like the ability to tailor the sound for different situations.

@steve59 -- true the OP didn't ask the question, but another member did ask that very specific question about halfway down the page.  My post was directed to him.

Thanks for all of your opinions. This has been very informative and given me much to think about! Lots of pro and cons for both sides.