This is a library of perfboard and single-sided PCB effect layouts for guitar and bass. I'm not an electrical engineer by any stretch of the imagination, just a DIY'er who likes drawing layouts. It is meant for the hobbyist (so commercial use of any of these layout is not allowed without permission) and as a way to give back to the online DIY community.

Wednesday, May 18, 2016

Run Off Groove Big Daddy/Grace

Here are two great sounding, yet simple circuits from Run Off Groove. The Big Daddy uses a JFET gain stage to push a 386 chip, while the Grace uses a JFET buffer in front of the 386 for added sparkle. Schematics, sound clips, and more info can be found on the ROG site.


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13 comments:

  1. MiquelMay 19, 2016 at 8:01 AM

    As I can send you a message ??

    ReplyDelete
  2. Cupenijpmg2021June 13, 2016 at 5:11 PM

    where is the out?

    ReplyDelete
  3. Effects LayoutsJune 13, 2016 at 6:10 PM

    Volume 2

    ReplyDelete
  4. MetalheadFebruary 10, 2018 at 3:30 AM

    Verified thanks

    ReplyDelete
  5. Marcus CorradiniSeptember 2, 2018 at 3:09 AM

    Bigdaddy is ok. Grace not so much. The 6.8nF capacitor in Grace must be connected to the source, not the drain, according to the schematic.

    ReplyDelete
  6. WayneOctober 24, 2020 at 2:06 AM

    Hi!

    Can i use 3.3 cap (50V) instead 2.2?
    Can i use 13k instead 15k resisitor?
    Can i use 4.8M-4.9M instead 4.7M resisitor?

    Its critical for sound?

    Thank you so much and have a good day.

    Sergey,

    ReplyDelete
  7. Manuk MusicNovember 29, 2020 at 1:33 AM

    I don't understand the difference in sound between Big Daddy and Grace. I never listened them.

    ReplyDelete
  8. veggamanFebruary 10, 2021 at 8:11 PM

    I want to attach a daughter-board BMP Tone Stack or a Hi-cut filter on the Big Daddy. Where do I put In and Out from daughter-board (Toneboard) to the FX PCB? :)

    ReplyDelete
    Replies
    1. Effects LayoutsFebruary 10, 2021 at 9:35 PM

      Easiest way is to wire the out of the Big Daddy to the input of the daughterboard.

      Delete
  9. UnknownFebruary 11, 2021 at 2:35 AM

    Ok thanx, what about out on daughterboard? Would that be the new output to 3pdt ?

    ReplyDelete
  10. Ricco SeixasFebruary 15, 2021 at 5:26 PM

    verified,work better with j201.

    ReplyDelete

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