In films such as the current "Godzilla" wiggle all cabinets. Have never seen such a sound heard from so cheap boxes.
I run the speakers at an affordable Onkyo TX-NR 535. The sufficient for this perfectly and has enough power.
Absolute Kaufempehlung.
UPDATE: 01/09/2015
Have made in the configuration change. Could return the Onkyo and bought in return a YAMAHA RX-V 577. Somehow brings more Yamaha more Qlangqualität from the devils as the Onkyo.
In addition I have connected two tower speaker that you left and right can be the BI Ampingbetrieb run with the front. That said, I'm going to the 7.2 in 5.1 -BI-amping and have again more sound volume.