I bought a Magni/Modi approximately a month ago. At first, I was happy with it because it was a big upgrade over uDac-2 for my HD600 and DT990s. However, over time I noticed a significant channel imbalance in my setup. I don't know if I just have terrible ears and didn't notice it at first or if it got worse over time, but anyway... I first figured it was my headphones, so I tried swapping the HD600 cable jacks to each earcup, but then it sounded imbalanced toward the other ear. I also downmixed to mono using the Foobar DSP to make sure it wasn't in my head. I then figured it might be the pot being too low, so I cranked down the digital volume and cranked up the pot, but it was still there.
So clearly something was wrong with the Magni/Modi (my coworkers: "What a piece of Schiit! Lol."). I shot Jason at Schiit an email asking about it to see if I could fix it. He replied with:
"It's extremely improbable (but not impossible) that the Magni has channel imbalance with the pot set that high. Our equipment is checked with both instruments and ears before its ships.
That said, to isolate the problem:
Swap the RCA cables to the Magni left to right. Does the problem change channels? If it does, then either Modi has a problem (highly unlikely) or there's a volume control acting in your system on the computer side.
If it does not change sides, and you'd like us to take a look at your Magni, we'll get you an RA. We'll measure it here and repair it and return it at no charge if we find the channel imbalance."
So, I tried what he suggested, but the imbalance stayed on the same side. Looked like the Magni was the problem. I sent it in to Schiit and they got it back in about a week (fast!). I got it shipped back to me free of charge, so I guess it actually did have a problem.
Regardless, it sounds great now. I'm also very, very satisfied with the customer service I received. I don't have any idea what their rate of failure is, but figured I'd let people know that even if they happen to get a defective product, Schiit does not slouch in their customer service or repair departments.