Got a mojo 2 a few days ago, it's been brilliant with Rokit5 studio monitors, monarch mk2 and my ancient HD800. Just of the heck of it I let the eq loose on the HD800, 125 up almost all the way, a notch or two on 3k, they've never sounded better, fun even. They are officially out of storage!
I did one A/B test, Diana Krall - Like someone in love.
Was previously using a moondrop dawn pro, the mojo 2 was just on another level with the voice on that, it opened up her voice, the dawn pro sounded flat/compressed with the voice on that track. Musical bass etc. What I think I'm not crazy about it the laid back highs on cymbals and crashes, I think eq is my friend there, I does turn on the slam with even on db add at 3k. I have more listening to do.
I'd replace this mojo 2 if something happened to it. My only regret is that I wish I'd have done this earlier.
I don't know about people saying DACs don't matter after a point, RME Babyface Pro to Dawn Pro to Mojo 2. The Mojo 2 is clearly much better than the other two to my ears, no blind test etc.
Another thing I was impressed with is the build and how easy the color interface was to learn, took 20 mins to get all the features down. Pictures do not do it justice, the unit is substantial in the hand, feels solid and the case is lovely, I'm fighting the urge to put the soft side of velcro on the back, like we do on guitar pedal boards with industrial strength glue backing.
I did get a moment of white noise from my m1 mbp. I also had a notification of shutting down a usb device do to using too much power, I was watching a show on netflix at the time. I'm going to try the optital out from my RME today, I read it sounds a little better, maybe it was a q&a with Rob Watts, not sure.
edit: the optical sounded meh via my rme babyface pro, so that's settled to backwards compatibility unless i get some specific "hifi" gear with optical, I think in that case the sound will be better compared to the RME. I tried a DSD256 stream, the down sampling was just a massive downgrade, totally lifeless, this is I presume a worst case test.