After seeing the interest expressed in my EQ frequency responses, I decided to take the HD500 back into the lab to measure gain. How much gain is there from the various inputs? How much gain thru the various EQ (my previous post lists some of that)? Perhaps look at gain thru some of the FX? Or maybe I shouldn't look at gain. I am soliciting other ideas to look at while I have it in the lab. Do any of you have any ideas?