Can you explain "the level of the different amp with the rest of the speakers?". I did not quite understand the question.\n\nBe careful, outside of PENG, and Pogre, which they have given Honest answers to you opening post on your thread. DSP “Optimizer” is Processing what you are hearing. Without knowing the “gain” between the pre-amp and amp of your S801, or the pre-amp L\/R output of your RZ820 there really isn’t no tell what levels you really had set Exactly. Enjoy your system seems like you put some time and research buying your gear and speakers. That RZ820 Probably one of the best deals on a New AVR that comes with a nice 3 year warranty. Onkyo has good CS. \n\nPS I was going to recommend a SPL meter, as a way of matching db level output from your speakers but that alone will only tell you so much. Don’t get to Caught Up with finding the Right “Spec” levels. You seem to be enjoying your setup.\nUse your EQ, setting use the DSP Processing, you like the “Optimizer”? use it! tweet tell you can’t tweet no more. Than come back the next day and start All over again. Its your setup Enjoy!!