My Sakura 387a has a prologic. Stereo sources is spread to my 5 channels. However, I have to lower the volume of the rear L/R speakers as they are too loud and does not sound good both for music/ht. In my sakura remote I can choose: 2ch, 3ch, or 5ch. The bad thing about this is that what comes out of the rear speakers is the same as the front speakers, giving the effect that One person talking in the movie is talking and standing at the four corners of your room.