DESC: Onkyo 7.1-Channel A/V Surround Home Theater Receiver, Model TXSR504S Besides the usual Onkyo trademarks—on-demand power for all seven channels; highly effective processing capabilities; and proprietary technologies like Wide Range Amplifier Technology (WRAT)—the TX-SR504 will delight you with its versatility. This home theater control center is ready to accommodate all your existing components, as well as any new high-definition additions to your system, like DVD recorders, universal players, set-top/cable boxes and gaming consoles. You’ll even be ready for the upcoming high-definition discs,