Power and processing: 7-channel amplifier 110 watts per channel into 8 ohms (20-20,000 Hz) at 0.06% THD, with 2 channels driven high slew rate design for clear, consistent performance across a wide frequency range Dolby® and DTS® surround sound decoding Dolby Atmos® and DTS:X™ processing for use with in-ceiling or "height" speakers for enveloping overhead sound effects Dolby Atmos Height Virtualization creates three-dimensional effects without height speakers (via free future firmware update) Cinema DSP HD3 adds richness and depth to music and movie soundtracks Surround:AI™ technology analyzes your content and creates optimal surround effects in real time H-shaped cross frame adds additional stability to the chassis while reducing vibrations YPAO (Yamaha Parametric Room Acoustic Optimizer) automatic speaker calibration included microphone helps fine-tune your system to best match your room's acoustics R.S.C. (Reflected Sound Control) with multipoint measurement helps deliver smooth, well-balanced surround sound across different seating positions