I have worked on several new Onkyo receivers with AccuEQ. I am finding that this auto calibration technique is much worse than others on the market. While the others are not particularly great they are better than AccuEQ. Onkyo in the past also offered manual equalization for front, center, surrounds and subwoofer along with automatic setup. These manual equalization adjustments are now gone. No other multi-channel receivers are so limited in their manual adjustability while having such a poor automatic system. I would avoid these products until Onkyo remedies the situation by at least putting the manual equalization back in their units.