Pete Millet "Butte"

Discussion in 'DIY' started by JK47, Feb 11, 2016.

  1. auri

    auri Facebook Friend

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    Turns out I am just dumb. Installed the regulators the wrong way - they should be upside down (metal showing, not writing). LOL. Thanks though.

    I'll do some ABing in the next little while and post some amateur impressions vs. my Asgard 2.

    Great project so far - reasonably priced parts overall, attractive and solid enclosure, great directions and a very responsive and helpful creator in Pete.
     
  2. Cspirou

    Cspirou They call me Sparky

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    Has anyone tried this with the OPA551 at a lower gain(1x)? If so any comparisons with the OPA552?

    Edit: I'm lazy. I see @Poleepkwa has built it with the OPA551. However have you heard the OPA552 as well?
     
  3. Poleepkwa

    Poleepkwa Friend

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    Unfortunatly I have not used the OPA552.
     
  4. m@tty

    m@tty New

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    I would be interested in a list of OPAMPs that people have tried and their impressions?
    [​IMG]
    Have made a Butte with Talema transformer TKD pot, Elna Silmic Caps and Sparkos Regulators but have yet to try other OPAMPs
     
  5. Cspirou

    Cspirou They call me Sparky

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    Dang! That's definitely overkill! I would say you should have used your own power supply and opamp PCBs if you were going this route, but then you wouldn't be able to use the CCS bias.

    Sparkos makes discrete opamps too as well as Burson. Curious if any of those are a dropin replacement for the OPA551/552
     
  6. Poleepkwa

    Poleepkwa Friend

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    I asked Pete his thoughts about the OPA551/552:
    "I don't think there's any advantage to the OPA552 over OPA551."
     
  7. Cspirou

    Cspirou They call me Sparky

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    Thanks! How long did it take for him to respond to you? I wrote to Pete a few days ago about something and haven't gotten a response yet.
     
  8. Poleepkwa

    Poleepkwa Friend

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    It took a while ...3-4 days.
     
    Last edited: Jan 22, 2018
  9. Cspirou

    Cspirou They call me Sparky

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    Nevermind, his response was in my junk folder. Damn gmail
     

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