Not that I know of. I would be surprised if such existed today. There are older processor/DACs that will do it. In fact, I have a Technic SH-AC500D in one of my closets that will serve.
Ah Kal, you are bumming me out. this was a similar answer to the one about a multi-channel DAC that you gave me quite a few months ago. You have also discovered that I'm consdering diregarding your (very excellent) advice on pre/pros.... but with good reason. This is clearer in my other responses to you in the other threads.
Thanks for always being so helpful!
So why not add a separate subwoofer crossover like the NHT X2? It's a very flexible device. A friend uses it in a Pass Labs X1, Parasound JC-1, Martin Logan SL3, ML Depth system -- he's been happy with it.