For those who demand the very best in home entertainment, we introduce the Elite SC-79 AV Receiver, featuring state-of-the-art Class D3 amplifiers. The SC-79 delivers incredible fidelity, effortless connectivity, advanced multi-zone features and immense power. Audiophiles, get ready for the ultimate immersive experience. Call it Audio Muscle � Class D3 Amplification Rated at 140 Watts x 9 channels (8 Ohms, 1kHz, 0.08% THD), the SC-79 is one of the most powerful multi-channel AV receiver we�ve ever built. While lesser amplifiers� output diminishes as channels are added, the SC-79 has the power to drive multiple channels simultaneously with no significant drop in per-channel output. This ensures that you�ll enjoy the full impact and dynamic range of high-resolution multi-channel audio as never before. Plus, the power consumption of the Digital Class D3 Amplifier is well below that of conventional Class AB amplifiers, helping you to save energy, too. Simply Stunning. High-Definition Audio with THX� Ultra2 Plus The SC-79 is THX� Ultra2 Plus Certified, offering startling surround sound in rooms up to 3,000 cubic feet in size with a 12 foot or greater viewing distance from the screen. The SC-79 also supports high-definition audio formats like Dolby� TrueHD and DTS-HD� Master Audio, as well as DTS� Neo:X surround, providing a 3-D surround experience for up to 9.2 channels.