Originally Posted by dxm
You all need to see today press release on Onkyo's website. It will clear up your spec questions. They also have the spec's for both the TX-SR806 & TX-706.
Quote from press release "The Onkyo TX-SR806 and TX-SR706 home theater receivers have THX Ultra2 Plus and Select2 Plus certification respectively, and both include the new THX Loudness Plus technology."
Being a new user to this forum I can not post the URL. So you will have to find the press release on your own on Onkyo's website. Sorry
Dropped about 14 pounds, went from 9.5 to 7.8 amps in power consumption but is still ultra 2 (plus) certified. Not sure what the plus means for power output. This must have a more efficient amplifier section to keep the Ultra-2 certification, in other words it isn't a space heater any more! It lost over an inch of depth, probably the 14 pounds of heat sink and power supply that are no longer there. Distortion went up a bit 0.05% (Rated power) for the 805 versus 0.08% (Rated power) for the 806, this is probably directly related to the efficiency gains, but nothing major, not a bad trade off given the significantly smaller power supply, peak power dropped slightly as well, but again, nothing major:
145 W + 145 W (8 ohms, 1 kHz, 0.7%, 2 channels driven, FTC) for the 806
150 W (8 ohms, 1 kHz, 0.7%, 2 channels driven, FTC) for the 805
It seems like Onkyo made some good trade offs, efficiency and less heat for slightly less power and slightly more distortion, but nothing anyone will be able to hear. Given the new features, more inputs and hopefully better HDMI processing it seems like a step forward overall.