Okay, I have a Yammy 5760 with YPAO (auto calibration) I used this ... and it sounds fine, but... I have know idea if it can sound better. I have AVIA but have NOT A CLUE on how to us a sound meter. I know most everyone on here suggests a simple Radio Shack brand (which model?), but I need STEP BY STEP, "hold-my-hand" and "spoon-feed-me" instructions on how to use one of these properly. Any advice guys?