Onkyo TX-DS787 AV Receiver with THX certificate. For sale High End AV receiver Onkyo with authentic THX certificate in perfect condition When a receiver is THX® Select certified by Lucasfilm Ltd., you can count on superior performance. To qualify, a receivers digital processing must include specific enhancements (Timbre Matching™, Decorrelation™, Re-EQ™, etc.) which ensure accurate reproduction of the movie theater experience in the home. Also, its built-in amplifiers must meet super-strict guidelines for sound purity and power output — no surprise here considering Onkyos Wide Range Amplifier Technology and high-current, low-impedance amp design. In addition to Dolby® Digital, DTS, and Dolby Pro Logic™ decoding, the TX-DS787 features THX Surround EX; you get home theaters standard 5.1 channels plus an additional back surround channel. You can either use the receivers built-in 6-channel power (100 watts x 6!) and add one back surround speaker for 6.1 sound, or connect a separate 2-channel amp and a pair of back surround speakers for 7.1 sound. Details: THX Surround EX, Dolby Digital, DTS, and Dolby Pro Logic decodingTHX Select certifiedcomponent video switching: 2 in, 1 outoptical digital output100 watts x 6 channels into 8 ohms (20-20,000 Hz) at 0.08% THDbacklit learning remote with macros and 1-way LCD26 DSP modesdual-room/dual-source stereo speaker outputon-screen display96kHz/24-bit digital-to-analog convertersassignable digital inputs: 2 optical, 2 coaxial3 audio and 5 A/V (including 5 S-video and 1 front-panel) inputs7.1-channel preamp inputs and outputs40 AM/FM presets17-1/8W x 6-7/8H x 18-7/16D