The DSPeaker X4 is a big upgrade over the DSPeaker Anti-Mode 2.0 Dual Core which it replaced in my system. Of course it should be as it is quite a bit more expensive. The X4 DAC outperforms the the Dual Core sounding smoother and a lot more refined and nuanced. The room correction software works great and is a must in my current room. It is very versatile with lots of options to fine tune the sound.
It also has digital coax and toslink outputs so you can use a different DAC with it and still get the benefits of the room correction.