Onkyo Tx-Sr705, 3 HDMI inputs ($799 msrp)
Sony ES STR-DA5200ES, 3 HMDI inputs ($750 at Crutchfield)
Denon AVR-2308ci, 2 HDMI inputs ($849 at Crutchfield)
Yamaha RX-V861, 3 HDMI inputs ($899 msrp)
$300-400 doesn't buy much in the way of speakers, let alone wireless speakers.
PS: "wireless" speakers still have power cords.