So in other words the Pioneers basically 'demand' manual EQ knowledge, which without knowing exactly what you are doing can cause more harm than good. I figure it's a great option for those who are well edjucated on this stuff, or can have it tailored by an expert/dealer, but for the rest of us it's a bit of a gamble. Then again, so are a lot of electronics. As I have moved away from any type of EQ whatsoever nowadays I'm relieved I don't have to "reply" on equalizing trickery, as a guide or otherwise. My home theater is singing as never before... the transparency is impeccable with the NuForce using no EQ whatsoever. I never experienced the same with YPAO, MCACC, ARC or Audyssey. As you probably know I loved the latter system, but it was never this transparent or musical. I have no doubts the Pioneers and MCACC is an ideal solution for some, it was just never for me. I'm glad I gave them a shot though. Perhaps not a fair shot since I did no manual EQ tweaking. It's about more than just the EQ though, of course. The amp sections were a bit stale and clinical to my personal taste, the opposite of what I got from Denon, Onkyo and NuForce. It's just a matter of preference.