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Continuous power output, per channel, 8Ω/4Ω (AVR850)
2 channels driven, 20Hz ‑ 20kHz, <0.02% THD - 120W/200W
2 channels driven, 1kHz, 0.2% THD - 130W/210W
7 channels driven, 1kHz, 0.2% THD - 100W/180W
Continuous power output, per channel, 8Ω (AVR550)
2 channels driven, 20Hz ‑ 20kHz, <0.02% THD - 110W
2 channels driven, 1kHz, 0.2% THD - 125W
7 channels driven, 1kHz, 0.2% THD - 90W
The lack of Dirac information (even being mentioned) in the video seems a bit remiss. Talking to some other potential 550 buyers this weekend at a forum meet and the feeling seems to be that if Dirac is restricted and/or limited in channels then it would be off the 'wish list' (certainly for me anyway).