Denon AVR-587 7.1-Channel Home Theater Receiver (Discontinued by Manufacturer) 7.1-channel home theater receiver with 525 watts of total power; meaxures 17.1 x 5.8 x 16.1 inches (WxHxD) 75 watts at 8 ohms across seven amplifier channels XM Radio ready and XM-HD surround sound capable; control iPod via optional dock 56-station AM/FM/XM random preset memory tuning Surround modes: DTS 96/24 decoding for DVD video; DTS-ES 6.1 and Matrix 6.1; DTS NEO:6; Dolby Digital EX; Dolby Pro Logic IIx; Neural Surround