I'll keep it simple.
Makes my stereo sound 100x better than it ever did.
Super high quality, looks fantastic.
I have it hooked up to my receiver which along with the speakers have been booming strong for the past 25 years, hope it can live as long as them.
Before I hooked this up, bass was uncontrolled and boomy but with the Modi, it's much more accurate. Highs are little better but still not much good, mids are better but like the highs, didn't change a whole lot.
Receiver: Pioneer VSX-9700s (25 yrs old)
Speakers: Bose 10.2's (25 yrs old)
DAC: Schiit Modi!!! (4 months old)