Schiit Mjolnir 3 Impressions

Discussion in 'Headphone Amplifiers and Combo (DAC/Amp) Units' started by ColtMrFire, Aug 18, 2023.

  1. atomicbob

    atomicbob dScope Yoda

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    Mjolnir thermal warmup data found here
     
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  2. earnmyturns

    earnmyturns Smartest friend

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    What's this, a solid-state amp that requires planning ahead for listening sessions? I'm shocked ;)
     
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  3. gsanger

    gsanger Almost "Made"

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    I haven’t heard any Schiit amps myself, but I have a pair of Monarchy SM-70 Pro amps that have a lot of kinship with the MJ3. The founder, CC Poon, recently retired, but they can be found used from time to time.
     
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  4. artur9

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    Given your comment about voltage and heat generation there, would it be prudent to invest in some sort of voltage regulation to (a) improve longevity and (b) possibly the sound?
     
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  5. Pancakes

    Pancakes Friend

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    The PSU regulates the operating voltage. The temp goes through stages to stabilize because various materials go through different thermal curves before settling at the given voltage. The materials in your oven do the same.
     
  6. atomicbob

    atomicbob dScope Yoda

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    I feel it is always a good idea to use true-sine output UPS for audio components, to avoid damage from disturbances on the AC mains. Also a good idea to elevate heat producing components to allow air flow beneath. I use these:
    https://www.amazon.com/dp/B092PN2C3M
     
  7. Poimandres

    Poimandres Acquaintance

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    Thanks, do you have any recommendations on a true-sine ups? Do you feel they are better than pure sine?
     
  8. purr1n

    purr1n Desire for betterer is endless.

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    This probably explains why I felt the Yggdrasil LIM just sounded way muted in the highs despite the LIM doing so well on either of my EC amps. And thus why I resorted to Yggdrasil A2/OG and MIL-B and suggested Yggdrasil GS. I think DACs that tend toward more incisive attacks in the highs (to a limit) will do better. On the delta-sigma digititus, that's a matter of personal preference.

    ^ This

    MJ3 is when solid-start starts to attain tube level (simple topology) plankton and microdynamics. The only other piece of solid state gear that I've heard do this is the Pioneer M-22. The downside is that I end up digging into CDs like Bob Marley's Live at the Record Plant or Live at the Roxy. Otherwise decent recordings from the likes k.d. Lang are merely OK. Stuff from Billie Eilish or Harry Styles make me want to go back to Magni or Piety.

    As far as comparison to Continuity and Jotunheim 2 specifically, probably not fair because of the much smaller form factor of J2 and its limited heat dissipation. Also consider that Continuity still isn't pure Class A, it's a way to deal with the gm doubling problem, to maintain certain class A characteristics. Read this on Class A, Continuity, and Class AB. They do different things well and people will prefer different things or maybe same person will prefer different things depending upon the recording. Also, the output stage topology is different. Jot 2 still uses PNP and NPN parts, with a twist that both parts are used at the top and bottom (as opposed to complementary NPN / PNP, where the PNP part, which never matches the NPN, will be on the bottom). SE Class A: there's no topology simpler than that with a single NPN, think triode (but without the output transformer). Finally, as you mentioned, there are the chokes, which are magic.
     
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    Last edited: Sep 24, 2023
  9. yotacowboy

    yotacowboy McRibs Kind of Guy

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    I just want to reiterate that the mids to treble cohesiveness is something that really stood out to me with MJ3. And would you agree that some of the nits to pick for MJ3 are more a difference in "leaning in to the music" vs. "leaning back with the music"? I definitely find MJ3 to be more of a "lean back" experience, but not to the point where it's distracting especially for a SS amp, or even what I'd call "colored". And neither lean-in or lean-back are bad types of presentations, imho; its great for the kind of worrying about a "neutral" that can be beneficial when pairing with sympathetic gear.
     
  10. atomicbob

    atomicbob dScope Yoda

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    What I recommend is avoiding the less expensive UPS with stepped sine approximations for outputs.

    True sine vs stepped sine UPS.png

    This is a diagram from Cyberpower that shows the difference.

    I use a combination of
    American Power Conversion SmartUPS (several)
    Cyberpower (several)
    throughout my lab in strategic locations.
     
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  11. roshambo123

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    Not sure if I know which terms are under discussion, but if leaning in or back means focus and control, MJ3 has more focus and control than Jot 2, which is a bit more than MJ2. Not not entirely sure I know if that's the same thing. If you mean the listener position, MJ3 sits farther back than say Jot 2 or MJ2, 3rd/4th row vs 1st row.
     
  12. dasman66

    dasman66 Self proclaimed lazy ass - friend

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    I took it as
    • "Lean in"... you want to focus on the details and really pay attention.
    • "Lean back"... kick back, relax and just let the music flow over you
    but no idea of the original intent
     
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  13. purr1n

    purr1n Desire for betterer is endless.

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    Leaning back listening to music:
    [​IMG]

    Leaning in:
    [​IMG]
     
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    Last edited: Sep 25, 2023
  14. Gazny

    Gazny MOT: ETA Audio

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    Do the highs sound different with feedback? vs the SE XLR No feedback.
     
  15. M3NTAL

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    Wow - that is profoundly accurate. P.S. Barry is absolutely amazing. AMAZING. I still want more of Rony/Lily - PLEASE maybe a 2-part spin-off.
     
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  16. Pancakes

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    Jason said the second run will be final (over on h-f).
     
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  17. joch

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    I wonder how many units that would be compared to the first?
     
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  18. roshambo123

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    Silver and 230V are also available on Schiit's site for 2nd run, Nov 1 ship
     
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  19. nishan99

    nishan99 Friend

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    Why tho? Is it the parts availability or lack of interest? I highly doubt the latter.

    I get why the folkbanger was limited, it was niche, expensive and used shit tons of tubes. But the Mjolnir?!
     
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  20. lagadu

    lagadu Almost "Made"

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    I understand why: it's big, heavy, hot and the "specs" look pretty bad to someone who isn't at least a little experienced. It's a niche product: you go to the site and see the Magnius, Jotunheim and Lyr and there's little reason to pay a lot more for something whose specs are so "inferior". It's not like most people know what class A is, or even ever heard one.

    Regarding the MJ3, unsurprisingly Schiit doesn't recommend plugging an LCD-R into it.
     
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    Last edited: Sep 26, 2023

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