Wow! After reading Alan's thread I do feel safe. Wid-I discovered the clipping problem happen during music play in Direct and PureDirect mode from Denon DSP. 2 Stereo, 7 ch stereo, and Dolby Digital OK. Could it be the pair problem DENON and EMO amp.

7.2-M80V2, QS8, VP150, M22, REAL SUB.DENON3808.EMOTIVA AMP(XPA-2 AND XPA-5)EMOTIVA erc-1 and ps3.