Like New 90 watts x 7 into 8 ohms (20-20,000 Hz) at 0.08% THD Dolby® TrueHD, DTS-HD™ Master Audio, Dolby® Digital Plus, DTS-HD™ High Resolution Audio, Dolby® Digital EX, DTS-ES™, Pro Logic® IIx, DTS Neo:6, and SRS Circle Surround II decoding Audyssey Laboratories' MultEQ® six-point auto setup and room calibration system (microphone included) XM Satellite Radio Ready (requires XM subscription and optional XM Mini-Tuner package) Neural THX Surround decoder for XM's HD Surround channels SIRIUS satellite radio capable (requires SIRIUS subscription and optional SiriusConnect™ home tuner kit) iPod® integration (requires optional Marantz IS301) M-DAX (Marantz Dynamic Audio eXpander) for better sound with compressed music sources like MP3 files multi-room/multi-source audio powered and line-level stereo audio output for 2nd room (using powered 2nd-room output allows 5.1 home theater in main room) digital audio output for 3rd room via optical digital out (available only with audio sources input through an optical digital connection to receiver) high-current, low-impedance amp design Source Direct and Pure Direct modes switch off all unused circuitry for the cleanest possible sound 192kHz/24-bit digital-to-analog converters for all channels HDCD decoding Dolby Headphone mode for simulated surround sound via standard stereo headphones on-screen display for easier system setup and operation learning/multibrand remote 17-3/8"W x 6-5/16"H x 16-7/16"D