Too bad for you and Yvette that Dave isn't trainable. :D Seriously, though, I'd be willing to help - but are these the tests that require that multi-thousand dollar machine? LOL Very true. Yes, I use a $40k APx585 HDMI Audio Analyzer. Interpreting the measurements is the challenge as most people simply will blindly make a measurement but may not understand what it means or if it was done correctly. I prefer having someone with an EE background. My wife's cousin is the perfect candidate but he lives in South America :( I tried a local grad student but it didn't get very far. Still searching...