I hate to ask such a simple question, but what number is actually 50 percent and also full wide open out of curiosity? I usually only bring it up to -20db and the volume is kicking good. I just wanted to really know where fifty percent was, so I definitely wouldn't get into distortion. I am using the Integra 9.8, Emotiva XPA-5 with gains on each channel at -11/-12db. That is what Audessey chose.