"Shortest Way" SW51 Amp Impressions (Simple SET Amp)

Discussion in 'Headphone Amplifiers and Combo (DAC/Amp) Units' started by Hands, Jul 12, 2019.

  1. BlizzardiCleric

    BlizzardiCleric New

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    Looks really nice! Let the lovely cat be a reminder that we can, sometimes, if not careful, take our hobby too seriously. ;)

    What does the '51' stand for, by the way?
     
  2. tommytakis

    tommytakis MOT: E.T.A Headphones

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    It's a secret message to storm Area 51 when the time comes... the cat is obviously a distraction ;)
     
  3. ChaChaRealSmooth

    ChaChaRealSmooth SBAF's Mr. Bean

    Staff Member Pyrate Gearmaster
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    So by default, Jude will delete any HF thread that's relevant to this amp?

    Now I totally want to start an interest check thread of this amp there (not going to, but tempting).
     
  4. Zampotech

    Zampotech Friend

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    figure 51 is a part of the name of the tube 6Z51P.
    Because of the possible "Shortest Way is 43" (6Z43P. Unfortunately this tube has no analogues.)

    "Area 51" would certainly be more intriguing.;)
     
  5. Walderstorn

    Walderstorn Friend

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    I really freaking love it mate.
     
  6. FatCat

    FatCat New

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    I don't have much to say, but extremely excited to support this project : )
     
  7. atomicbob

    atomicbob dScope Yoda

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    shortestway_front_panel_composite.gif
     
  8. Boops

    Boops Friend

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    @Zampotech If you want the cat artwork from the SBAF shirts, PM me and I will send it to you.
     
  9. songmic

    songmic Gear cycler East Asia edition

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    @Zampotech What is the measured output impedance of the L and H outs?
     
  10. FlySweep

    FlySweep Friend

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    "Shortest" + SBAF exclusive + ergo, HF ban on discussing the amp.. hmm.. me thinks we need to a an option to have Jude.jpg (old timers will know which one I'm referencing) as an icon option instead of the cat.
     
  11. Zampotech

    Zampotech Friend

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    measured output impedance:

    L=24 Ohm
    H=50 Ohm

    the method of half voltage, frequency 1000Hz, reference resistances P33 is used

    P33 Precision Variable Decade Resistor Resistance Box

    [​IMG]
     
    Last edited: Sep 3, 2019
  12. fierce_freak

    fierce_freak Friend

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    It looks like output impedance is higher than on the version Hands has evaluated, but I also suspect it won't make a huge difference with the headphones I anticipate folks will connect to this.
     
  13. Zampotech

    Zampotech Friend

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    I didn't even think of that.. [​IMG]
    A ban on the publication will cause Streisand effect [​IMG]
     
    Last edited: Sep 3, 2019
  14. Friday

    Friday Friend

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    As much as I think that this amp should have as few variations/options as possible... Is there any chance of having that pic on the transformer casing?
     
  15. Zampotech

    Zampotech Friend

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    Tell me, what is this mysterious image?
     
  16. Walderstorn

    Walderstorn Friend

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    Maybe this little pygmy, cause you know..it represents the shortest way.

    [​IMG]
     
  17. Hands

    Hands Overzealous Auto Flusher - Measurbator

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    I'm also curious about this, the supposed higher OI on these units vs the one I received. Just the nature of the different transformers?

    Still relatively inconsequential for high impedance headphones.
     
  18. gixxerwimp

    gixxerwimp Professional tricycle rider

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    Should be ok, if you blur out the offending text in the photo of the rear panel. There are ways of getting past the censors, as demonstrated by @shotgunshane in his FDX1 review on HF.
     
  19. gixxerwimp

    gixxerwimp Professional tricycle rider

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    The NBM/ZDTjr low Z output works for me with Clears, so all else being equal (which I realize it's not), this should still work for me.
     
  20. Hands

    Hands Overzealous Auto Flusher - Measurbator

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    Why discuss the amp on HF when it’s exclusive to SBAF?
     

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