Many have written Denon and Marantz support about an issue with speaker timing. The AVRs have the speed of sound coded as 300 m/s instead of the true speed. Of 343 m/s. To fix this, you have to manually multiply all speaker distances by 0.875. When I did that, WOW - everything snapped in to place and objects moving around the room sounded so much better. Audyssey themselves understand this issue and have addressed it in their -X desktop software ($199 per AVR license). Two things Sound United can do that so far refuse. One - update this app to automatically adjust the speaker distances so the processor will get the timing right. This would seem to be the quickest and easiest and be done first. Second is update the firmware in the AVRs with the correct speed of sound number. This isn’t rocket science and Sound United’s deafness on this issue is baffling.

Just awesome to be able to balance my setup, really enhance clarity and smooth out problems. $20 well spent, literally hours of fun. If you are wondering why spend the extra when the receiver has the same thing? From my pov you can make the most of your space and customize way beyond the one size fits all flat response. Even helps bridge the gap between home theater and music. Yes, the app is spartan in terms of educating if you are just staring out and the UX really needs some love. There could be an array of target curves to help become familiar with how a change impacts what you hear. Perhaps it could suggest solutions if you have a specific problem. Most of all it treats each speaker pair in isolation instead of treating them as a whole system, but you can still get to a happy place with a bit of trial and error. 5 stars because of what you can achieve, but I hope the developer understands that they haven’t done anyone any favors with the user experience. These is so much potential for a much better in app experience.

In years past, when amps had bass|midrange|high tone controls, one could dial up tone to suit. Now with Audyssey taking a profile of the room, it’s suppose to equalize better. But as many have noted, it does roll off the highs by default. And the overall results may not suit your tastes. This app allows you to customize those curves. That alone makes this app worth it!I thought I was missing the high end response I knew my speakers were capable of, and I was right. But if you wanted to use Audyssey to profile the room, you were more or less stuck with the results. This app gives you the ability to see the resulting curves and modify to suit. You can also decide to set an upper limit to each curve if you don’t want it messing with the high end. I’m satisfied with the results. Using tone controls on amps of old may have been easier, but this is more precise. Kudos to this app which allows one to adjust the results. In my case, I now have restored my high end frequencies without messing with the nice room EQ profile.

I’m still very new to the use of Audyssey and owning this quality of Home Theater System my 1st system was a Bose lifestyle 16 and while I loved it then it was just plug and play not compatible with todays technology. So my recent upgrade to Denon and Klipsch 7.2.4 and getting the best possible sound has involved some learning. I must say I’m kinda enjoying the process now that I’m starting to understand it more. This app is a necessity if you want to use Audyssey that comes on your AVR. But this I know for sure since this app is owned and developed by Denon and Marantz. Not Audyssey itself they apparently only License it. But own this they certainly should offer it free to everyone who bought they’re products. I know it’s only $20 bucks but if it wasn’t necessary they wouldn’t have felt the need to buy the license and develop the app in fact Audyssey should be paying them back for improving they’re product’s so well that’s just my thought. Until they make it free though it’s a must so cough up the $20 bucks you’ll be glad you did.