I'm currently using an Onkyo TXNR-709 with an Emotiva XPA5 in my basement theater, Panasonic 65" plasma. The Emotiva powers my L/C/R and surrounds (also Emotiva - 3xERM6.3, 2xERD surrounds, Rythmik LV12 sub) The Onkyo is only powering my rear surrounds and some in-ceiling speakers in other parts...