Class D IC

Has anyone tried anything with the TPA2000D2 filterless Class D amplifier IC? I have ordered some to try out, and just wanted to see what if any results others had. I am hoping to use it, figuratively speaking, to replace what would be the first and second stages of an amplifier configuration. I actually plan to use the TPA2001D1, but I ordered some of the other, stereo, ones just in case. I am working on the design of a subwoofer amp.

I want to try to use the output of the TPA2001D1 to drive a final stage to boost its level. I need an amp smaller and more efficient than Class AB.