Having looked around for impressions/reviews on the Mjolnir, it seems that there aren't yet many around.
Solude on Mjolnir
Trafomatic: Probably the most Mjolnir of the bunch, similar tonal balance, slightly less detail, greater staging, similar separation
http://www.head-fi.org/t/603218/schiit-mjolnir-headphone-amplifier/450#post_8589582 - post #457 of 1771 8/5/12
For detail-critical listening (especially mixing work,) the M has it all. For tubey goodness, the L. Hope this helps.
1) http://www.head-fi.org/t/603218/schiit-mjolnir-headphone-amplifier/1290#post_8708414 - post #1295 of 17679/18/12
2) http://www.head-fi.org/t/603218/schiit-mjolnir-headphone-amplifier/1185#post_8699330 - post #1196 of 17679/15/12
A brief sum-up *)
Burson Soloist is slightly more "hifi" than the V200, and since the LCD-3 has a less prominent midrange presentation than LCD.2 - then Soloist a good match for the LCD-3.
Mjolnir is COMPLETELY different than the others. All the other sounds natural - but Mjolnir is the natural reference. Amazing bass. Very wide soundstage. The vocals is pulled forward (which again suits the LCD-3). I would say the Mjolnir is placed between the Soloist and V200 when it comes to "light / dark".
I would assume 80% of all head-fiere would buy Mjolnir on site after a demo. Fewer would have done the same with the V200, Soloist, PSii and G100.
What to do after a few months is still an unknown.
The Soloist is less fun than the Mjolnir. I could fall asleep listening to the Soloist with some good music playing (i.e. a good thing actually). I would really strive to get some sleep using the Mjolnir.
Having switched back and forth between the Soloist and the Mjolnir (using the LCD-3 and DAC V800), the difference in the amplifiers sound signature is significant. I would dare to say that the Soloist is "boring" and the Mjolnir is "engaging". And in addition, the Soloist is de facto tuned a tad more bright than the Mjolnir. That does not mean the Soloist is bright.
The soundstage depth of the Mjolnir is less than the Soloist. The width not that different - if you listen carefully. The "lack" of depth of the Mjolnir tends to impose the impression that the Mjolnir sounds wider...
Disclaimer: Long time listening impressions.
A) neutral (although exactly what that means is harder to define than it should be)
B) Lots of slam and PRAT assuming the source is providing it.
C) If the source provides the imaging it will allow it through and then it's largely up to the headphones. For instance the HD800 tends to have slightly more diffuse imaging than something like the HE-5LE or D7100.
D) I don't known how to separate this from the sound of the source. The sound I get is smooth and musical with no harshness.
The Mjonir is more resolving and reveals more detail but is also drier. Images are clearer with cleaner edges. It does a better job of unraveling complex music with a lot of layering. It better handles large dynamic swings. It generally does a better job of presenting stage depth.
The Peak generally provides a more diffuse sounding image which can actually be more realistic sounding at times. In comparison to the Mjolnir it has a hard time when things get complex. It conveys subtlety and emotion better.
I didn't really notice much difference in soundstage width but I was focusing on which amp I enjoyed more for a particular piece of music and I find that after a certain point soundstage width doesn't really make that much difference in that regard.
I didn't notice either amp imposing a particular tonal color on the music.
So which amp did I prefer? Well … it depends. If the music has complex layering like electronica, big dynamic swings like large scale orchestral or relies primarily on energy to convey its message like rock I preferred the Mjolnir. However, if the music relies on emotion, lyricism and subtlety I found I preferred the Peak. I do feel the Mjolnir does seem to be the more technically pure amp but both amps are really very good and the Peak does do a good job of straddling the line between technical purity and tube based romanticism. Of course, given that the Mjolnir is $750 vs the Peak/Volcano at ~$2300 it really is an extremely impressive piece.
http://www.head-fi.org/t/603218/schiit-mjolnir-headphone-amplifier/480#post_8592392 - post #493 of 1771 8/6/12
I can't stress enough just how convincing the Mjolnir+T1 pairing really is. It's a match made in heaven for sure. There is a very flat sound signature, unlike the V shape of Burson units. The Burson units sort of put the vocals "outside" your head ,but they are actually hurting the SQ in the end. The Mjolnir is more of a " \ " bass tipped curve, but doesn't drown out those ever-so-fine treble details and transients. That means a very flat frequency response for those neutral-nazi people out there. However, it doesn't try to get in the way of the music like Burson and others do. I'm done searching for headphone equipment for atleast a year, I might occasionally login to headfi now. That is the only compliment a manufacturer needs. Yulong D18/Mjolnir/Beyer T1 combo = Peace out HeadFi. Thank you Schiit!
I have never heard Senn Hd 800's so I couldn't really say how they would sound with either amp--but from what I have read about the sizzly high end of the 800's I would suspect they would sound more bright with the Bryston than the Mjolnir--
So far the Mjolnir sounds to me more full sounding with slightly more presence across the whole spectrum--
But again that is my impression and Jason say's to get at least 50-100 hours on it before any critical evaluations or comparisons--
Still haven't tried my LCD 2's yet but really liking the 650's with this amp...
This amp is a totally phenomenal bargain at $749.00--remember the Bryston is $1295.00!!!
edit: I'm finding the Mjolnir sounds significantly better once it's had time to warm up. The LCD-2 is nice through the Mjolnir, but this Schiity amp elevates the HD800 a few rungs above imo. The clarity of every element and coherence of the overall presentation is something to behold. Also, this amp should obliterate the "HD800 has no bass" myth. Anyone clinging to that view after hearing these components should not be trusted. Ever.
I'd love to combine these amps.
The Mjolnir was a fun listening experience, but I felt that its focus and articulation were slightly softer than the Burson. Burson's images were slightly weightier and better defined, particularly down low. Burson also has more treble energy, whereas the Mjolnir has a smoother top end.
However, listening to tbe Burson, the soundstage was quite tightly walled-in, whereas with the Mjolnir, the walls literally fell away, creating a much more free, speaker-like presentation. I loved this about the Schiit amp.
This has me looking very much forward to the 'Statement' amp at year's end.
I'm finding the Mjolnir sounds significantly better once it's had time to warm up.