So far so good.
I got a umic 1 mic and a stand and ran Dirac live. Like the sound so far. I was considering the Marantz 8012, but ultimately decided to go with the Nad.
My main deciding factor was I had an Onkyo 805 with audyssey xt and I noticed some things I liked, and didn’t like. I liked how it seemed to envelope the more and the sound seemed to extend from speaker to speaker and have a wide soundstage and good transitions. What I didn’t like was audyssey always setting my speakers with high crossovers, and the surrounds and center seemed to lack bass. Also, it seemed to quiet the speakers too. Sometimes the surrounds were hard to hear because the front over powered them, or it quieted the front too much because of a bad reflection point. Then, it always set the center way too low. This is with me going from the synergy, to reference, to RF-7 IIs and a dorm room, to an apartment to a house over 10 years. Different rooms, different speakers, always had these quirks.
So, I thought about the Marantz but it would just have audysse xt 32 and thought why not try Nad with Dirac. It instantly seemed to solve my issues. Nice and clear center channel with good bass. The ships zoom by in Star Wars and has bass to it. My sub was having trouble with the low notes in the DC or marvel movies and now it sings and shakes the house. I kid you not I was shocked with the kick *** dts intro. The bass was crazy good. The highs are so controlled on the Klipsch and it has like a bounce to the high notes.
I thought I would miss the power of my Onkyo 805, but it was noting without proper set up. The Nad I’m listening at lower volumes because the center is clear and properly adjusted. The surrounds have great presence. Music is more enjoyable to listen to. The Onkyo had a more in your face bright sound, where the nad is more controlled on the highs. I was reading on there site it may have to do with the power the Nad has.
Hope that helps with your decision. You may want to check eBay as I have seen safe and sound selling the 777 v3 refribished or world wide stereo is where I got mine and they will give you a price over the phone. Just check to see how close it is in price to the 758 before you purchase.