It depends on the model. You can have YPAO with RSC but no sub EQ (e.g. the RX-V673). Sub EQ is only in the RX-A20x0 and RX-A30x0. But a separate sub EQ system for about $100 (e.g. Mini DSP or Behringer BFD) can be added to any model and will do a much better job.