Just to let you guys know that for RXV-650 and RXV-750, the YPAO (Yamaha Parametric room Acoustic Optimizer) doesn't have the parametric equalizer at all. In fact, there is no equalizer function at all. If we had known that the YPAO doesn't have EQ function, we would've picked up the Pioneer equivalent at 30% less. After all, we don't use the DSP function anyway. My husband just bought the RXV-750 on Friday and we're returning it to the store on the grounds of false advertising. It seems like only the RXV-1400, RXV-2400 and the RX-Z9 comes with the full-fledged YPAO.