This is a simply amazing receiver right here! Has all the bells and whistle. Only about 20 hours on this unit. Works perfectly! Extremely clean. Mike Colley Behold the most powerful receiver Crutchfield has ever offered. With170 full-bandwidth-rated watts x 7 channels thats 1,190 watts total! the AVR-5800 sets a very high standard when it comes to home theater clarity, versatility, and impact. Its also extremely smart. Dual 32-bit SHARC processors handle THX Surround EX, DTS-ES Discrete 6.1, DTS-ES Matrix 6.1, Dolby Digital, and Pro Logic decoding. The AVR-5800 also offers all the Lucasfilm Home THX Cinema enhancements required for THX Ultra certification. Its dual processors also provide Widescreen 7.1 processing, which delivers 7.1-channel sound with stereo, matrix-encoded, and discrete 5.1 sources, and Denons renowned AL 24 (ALPHA 24) processing, which uses sophisticated interpolation to produce analog smoothness from stereo digital audio (for sources with resolutions between 16-bit and 24-bit). These are all part of Denons DDSC-Digital (Dynamic Discrete Surround Circuit) configuration, which treats your surround audio to a series of optimized, single-function circuit blocks, ensuring impeccable quality. Another key element is the D/A conversion section, which uses 16 high-resolution 192kHz/24-bit DACs (2 per channel) in differential configuration. The result? Simply stunning sound! The AVR-5800 is a shining example of Denons forward-thinking approach. It has an RS-232C port for enabling software upgrades. And for high-speed connectivity with compatible components down the road, the AVR-5800s back panel and circuitry are ready for the addition of an IEEE 1394 port. As for expandability, just feast your eyes on the back panel. Two sets of 7.1-channel inputs, 10 digital inputs (including AC-3 RF for Dolby Digital laserdisc fans), 8 S-video inputs, 3 component video inputs, true 192kHz/24-bit digital input capability and thats just for starters (see Key Features below). This Denon will accompany you into new A/V frontiers. But youll always be in cool control thanks to its intuitive touchscreen LCD remote. The included charger/base station supplies RF/IR flexibility.