I have a Sony STR-DE197, This receiver has 4 channels, but every single specification site on the internet will only tell me the wattage output of 2 of those channels. The websites say that my receiver puts out 100x2. So does that mean that it puts out 100x2 on both A and B pairs, therefore putting out 100 watts to all four channels? Or does that mean that power decreases to the 100 watts channels when all 4 channels are filled? I just have no clue. So can somebody please Google the receiver for me and tell me the specifications in non-receiver expert terms? Thank you.