Sony STR-DH550 A/V Receiver - 5.2 Channel - Dolby TrueHD, Dolby Pro Logic IIz, Dolby Digital EX, Dolby Digital, Dolby Digital Plus, DTS-HD Master Audio, DTS-HD High Resolution, Dolby Pro Logic, Dolby Pro Logic II, DTS HD, DTS 96/24, ... - 20 Hz to 20 kHz