Just read Kal's review of the DEQX and a few things stood out.
For those of you concerned about 24/192, it looks like the DEQX downsamples (right word?) it to 24/96. As for the other DAC measurements, looks like there is room for jitter improvement. Might be worth looking into a reclocker like the Wyred4Sound Remedy, or a pricier one.
I was very interested to read that the speaker correction and calibration seemed to make a larger impact than room correction in Kal's set-up. Though Kal also suggested that with more time and effort, better room correction and EQing could be achieved. Of course the smaller impact of room correction could also be because Kal has a well treated room already.
Oddly enough, Kal decided not to rip the crossovers out of his speakers to evaluate the DEQX ability to replace passive crossovers. Huh, go figure. :)
This thread and Kal's review certainly have me intrigued. I came to this looking at DEQX as quite similar to my DSPeaker Dual Core 2.0 as a DSP room correction device, but it seems to offer considerably more than that (Kal I'd be most interested in your thoughts on the DEQX relative to the Dual Core if you'd care to share them). Though I also felt grateful for the ease of interface on the Dual Core, after reading about the steep DEQX learning curve.
From other threads and forums, it also seems that the manual EQing possibilities can potentially change the character of a speaker, allowing home users to tweak the voicing of the speaker. Still hoping to somewhere find a useful tutorial on what bumps and valleys at what points on the frequency spectrum have what impacts on a speaker's sound. But it may be possible to have presets that equate to a more forward or laid back sound, etc. Very intriguing. For example, wonder how much Kal's Brystons could be made to sound like his B&Ws or vice versa by using something like the DEQX.