Deer creek audio and dsp is great for two channel listening. But they really don't have a workable solution for home theater DSP.
A good DSP arrangement solves a lot of room problems and equipment problems and is underrated and not fully appreciated. Probably because the interfaces and the product are so difficult to work with. It's a real pain in the ass to deal with DSP the way it's set up and really shouldn't be. Mcintosh has a room treatment box that provides no graph before after and no way to make changes and requires microphone for sampling just like everybody else. It may sound very nice and very good but I wanna see something and I wanna be able to change something.
Deer creek audio is very convoluted when it comes to home theater listening. They say you can use it for this but it's really not workable.