Sound - 9/10: The Schiit Fulla surprised me with the fullness of it's sound. I usually try to keep price out of my reviews, but for a dongle under 100 dollars I tend to expect a frailer sound, and difficulty powering higher impedance headphones. The Fulla can power my HD600s (300 Ohm impedance) very well. The main problem with the sound quality itself is the treble. In some songs, mostly when lost of different types of sound are happening (lots of bass, treble, and high at the same time), the treble is distorted. It's not terrible, but definitely shows that it's power has repercussions. Other than the treble inaccuracy, the Fulla is excellent, especially in comparison to dongles of similar price. 
 
Design - 8.5/10: Though i'm not terrible nit-picky, there are a good few problems I have with the Fulla design wise. The size is great, the weight is excellent, and the build quality, as far as materials and durability goes, is amazing. The main problem is the finishing of the product. The edges could have been filed down, or at least give a rubberized finish. They are very sharp, even more so than other Schiit products. The sides are rough, but not horrible. The only other complaint I have is for the dial. The dial is pretty small, which is okay, it is proportional, but it's oddly hard to turn. The first Fulla I got it was nearly completely stuck, and I got another, which was much better. The second was still difficult to turn accurately. If you want an exact amount of power, you have to be careful while turning it. Once you get used to it, though, it becomes pretty easy. The design overall is great, but the drawbacks are worth mentioning. 

Sound - 10/10: I was very surprised by the quality of the sound from the new Magni, the M2U. Having used the original Schiit Modi and Magni stack, upgrading to the Schiit Modi 2 Uber and Magni 2 Uber, I expected similar sound quality, and better build and inputs. The sound of the M2U changed, and only for the better. The slight harshness of the original Magni which made it hard to listen to for long periods of time, and even made it hard to listen to certain genres, is not included in the newer M2U. The M2U is also a bit less bright, but remains slightly warm, though not terribly warm. The sound is what surprised me most about the M2U, but it was not the only change made from the original. The power is phenomenal; more power than I will ever need. Running everything from Audeze, HD800s, all the way to my everyday use Sennheiser HD600s. It can power them all, and more.
 
Design - 9.5/10: Similar it's predecessor, the M2U is quite an attractive amp. It has a very clean finish, and looks and feels very sturdy and well made. Not giving this amp's design a perfect 10/10 may be unfair, but there are some very slight complaints I have. The edges are sharp, which if you aren't in close proximity with small children isn't a problem (it couldn't cut you unless you really tried to make it cut you). The light on the front is also a tad bright, though the only reason it is noticeable is if you sleep in the same room you keep it. There are multiple ports on the back, with a gain switch, which pushes headphones more than I had expected. Overall, there are no huge problems, but it wouldn't be fair to ignore the small ones that exist. 

Sound - 10/10: As expected, Schiit made a few improvements when developing the M2U. In comparison to it's predecessor, the original Modi, the M2U seems more passive. The first Modi's sound was a bit warmer, which for most wouldn't be a problem, though it was for me. I can say without doubt that the Modi 2U sounds more accurate and possibly a bit crisper. It performs perfectly, in my opinion, in all of the musical genres I tested it with. It emphasizes accuracy and precision without putting the treble and highs too forward. While paired with the Magni 2 Uber powering my Sennheiser HD400 headphones, the Modi 2 Uber shines. With a set up that is so solid state, any discrepancies between the devices would be extremely noticeable. To much ability there was none. A truly compatible DAC.
 
Design - 9.5/10: The M2U is a pretty DAC. Lightly reflective silver, one small button on the front, and three lights. It is a very nice looking and feeling DAC, being neither too heavy, or extremely light. The contrast while paired with the Magni 2 Uber is minimal, and makes for a very interesting, but not distracting duo. As far as functionality is concerned, everything works well, excluding the input switch on the front, which is a bit loose, but is still workable. The main reason I went for the Uber version of the Modi 2 was the inputs. I can use my computer, music dock, and gaming station, all at the same time, while switching through seamlessly. This is great, and works perfectly. The M2U doesn't get hot, which is awesome while living in a room without air conditioning. Looks and feels great, and functions amazingly.