Finding the perfection of HDTV is an undeniable pleasure. The discovery of home theater is a revelation. Anchored around Onkyo's build quality and proprietary technologiesWide Range Amplifier Technology (WRAT) and Optimum Gain Volume Circuitrythe groundwork is laid for powerful audio reproduction without the noise and distortion that limits other receivers. The TX-SR503 7.1-channel home theater receiver incorporates 192 kHz/24-bit digital-to-analog converters for all 7.1 channels to preserve the quality of your audio, and it also offers HDTV-capable (50 MHz) component video switching to give you connectivity and versatility with the latest displays (with still enough options for those who haven't made the change). With superb functionality and ease of use, the TX-SR503 is perfectly suited for those looking to explore quality home theater in the HDTV environment, now and in the future.