A 5 minute test shows that the tuner apparently works fine. It outputs fine, no clipping or distortion. It also has damn good sensitivity! I'm picking up local stations almost totally clear, with no antenna attached to the tuner, in a basement to boot!
I went to a site called fmtunerinfo.com, but could find no info on my exact model. I found the KT-880D, but I have the KT-880. Google has yeilded little info on this tuner.
As of right now, my plan is to put this in with my Sony amp, since it lacks a tuner. This tuner won't see much use, but it's not going to the dump either.