Now we are talking!
That's good news, the Magni seems fine then.
Now, let's try to figure out what's going on with your Laptops.
1) Are you using Foobar2000 with maxed out volume? (That's 0.00dB)
2) Is the Windows volume at 100% as well?
3) Have you tried it with and without the Scarlett?
I have two laptops, a netbook and a desktop. My desktop is my main. Anyway, nothing seems to change, but Foobar is irrelevant because I'm using it to make music, not rock out in Foobar, though that software DOES make the music a
little louder than my other software. Windows volume of course, is 100% and without the Scarlett, the volume doesn't change.
From this point on, REGARDLESS of specs, I'm going to say that the Magni does not drive the K612's with ease at all. I own both, so unless someone also owns this combo, I don't want to read shoulda', coulda', woulda'. Yes, my CD player makes them loud as **** , but so does my Receiver. It seems the output of the CD player is muuuuuuuch greater than my AI and headphone out on my case and motherboard. So that means if I can get a stronger amp, like a Matrix M-Stage, I should have no problems.
But just so we can be on the same page, here's a
link to a song. I have to turn my My magni all the way up for it to be at a
slightly lower than comfortable level. The kick slightly flutters the mid range. With my Receiver, I can match the Magni at 1:30, but the kick flutter is still there, just not as bad. That shows me that my Receiver is stronger than my Magni, and I would benefit from a stronger amp, or we can go the route of saying this while time, Schiit had sent me a bad Magni, which I highly doubt.