Hi, I'm Nathan.Sorry to hear that you're having trouble with this but I'll do my best to help you.
Yes, the yamaha ypao function does work in the same manner as the dbx, in that it automatically adjusts the individual channels via a microphone based calibration process.
A sensitive microphone/sensor is placed at various listening positions in the room, test tones play from each speaker, and the speaker level settings and equalizer settings are then adjusted automatically to suit that space. On yamaha it is called YPAO, on Denon/Marantz is is Audyssey, on Pioneer it is MCACC, etc. This type of calibration procedure is a common feature on most modern mid to high end receivers. If you are not happy with the calibration of the yamaha, I can recommend some other models that may suit you better
Well I would at least try the yamaha first, and listen to the results. If you have some specific results or feedback about what you like or don't, that would help me better tailor an alternate recommendation. Offhand though, this is what I would recommend: http://amzn.to/2cwoCR2
If you have any other questions, just let me know. Otherwise, please take a moment to rate my service using the stars at the top of the page; hopefully I have earned 5 Stars. I also invite you to contact me directly with any future support needs at http://bit.ly/1QwLxGh and ask for Nathan.
Thank you, ***** ***** a nice day,