I upgraded my amp and dac to the Asgard 3 and Modius, quite a nice stack.
Even though I like the amp, the more I used the liquid spark with the Hemp the more I preferred the Schiit Heresy over it, the Hemp sounds more competent with more detail and it sounds cleaner with the Heresy. Separation is better as well and it doesn't get congested like it does some times with the spark with more volume. Vocals can get a bit shouty with the spark as well and the highs sound like they obscure detail a bit, as if it pushes the detail into the background. These differences are small but noticeable. I'm sure the Magni 3 would sound great as well. (I still like the spark with the Hemp at lower volumes, sounds very life like)
I realized I preferred Schiit's stuff more so I thought I would upgrade, I considered the Modi Multibit with the schiit Vali as I hear that's an awesome setup for Grados, but reports of the MM sounding a bit blurry or less clear had me concerned so instead I went the route of the asgard 3 and modius which I'm enjoying. Another reason I went for this stack was because of the form factor and later on I could get the Bifrost 2 to replace the modius when I can afford it. The sound quality improvement over the modi3/heresy stack isn't large but noticeable in a good way, the soundstage is quite a bit larger(biggest difference) and separation is excellent, it sounds super clean as well. Pretty happy with the end result. I wish I had the gs3000e's now to see how those headphones would sound through this setup.