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.

Tuesday, September 8, 2015

EMMA ReezaFRATzitz

The ReezaFRATzitz is a high gain overdrive/distortion circuit based around a CMOS chip, most likely a CD4069N or 74HCU04. This layout reflects a modded version by FreeStompboxes member thn.technik with added Bass and Mids controls. Here's a link to his schematic and build pics. You might be able to squeeze it into 1590B, but you'd probably be more comfortable in a 1590BB. This is not originally a true-bypass effect. As you can see in the layout drawing, there is a "Clean Out" and a regular, or "Effect Out." The signal comes in from the input jack directly to the board and into the buffer. From there a DPDT footswitch switches between the Clean Out and Effect Out. If you prefer true-byass, you can ignore the Clean Out pad and just wire this like you normally would. You can then eliminate the 150n cap and 470k resistor from the Clean Out pad. Here's a demo of the original:



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26 comments:

  1. zedsnotdeadSeptember 8, 2015 at 2:15 PM

    OH YEAH!!!!
    Thanks a lot!!!!!!!!!!!!!!!! :D

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  2. FuzzDogSeptember 13, 2015 at 4:52 AM

    i've had soooo many requests for this on

    ReplyDelete
  3. Steve et DelphineNovember 11, 2015 at 1:36 PM

    Great job.
    Thank you.
    What do you recommend for Q1: BC238A, BC238B or BC238C ?
    A for hFE 120 ~ 220
    B for hFE 180 ~ 460
    C for hFE 380 ~ 800

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    Replies
    1. dtgehringNovember 11, 2015 at 1:50 PM

      B or C would be fine. That's for the input buffer, so really any medium to high gain NPN should be fine. 2N3904, 2N5088, etc. Whatever you've got lying around.

      Delete
    2. Steve et DelphineNovember 11, 2015 at 4:45 PM

      Thank you.

      Delete
  4. sergioNovember 30, 2015 at 6:03 PM

    Please, what is the value of the bias potentiometer?

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  5. UnknownJanuary 2, 2016 at 5:01 PM

    This comment has been removed by the author.

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    Replies
    1. UnknownJanuary 2, 2016 at 5:02 PM

      Checked!
      I tried using true bypass but was quite whistle.
      I put a link to the original and was not whistled otimo more, some potentiometers are reversed.
      Thanks.Desculpe the English.

      Delete
  6. alexmanJune 12, 2016 at 5:35 AM

    Excellent sound and no background as the original at maximum Gaine. Thank you for a great layout, you are the best.

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  7. ChrisSeptember 3, 2016 at 2:48 AM

    What is the difference of this layout with this one? http://tagboardeffects.blogspot.com/2012/10/emma-reezafratzitz-rf1.html
    It seems the gain pot lies most likely on the 14th pin of the IC while on this one goes on the other side? Same goes with level pot...

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    Replies
    1. Effects LayoutsSeptember 3, 2016 at 9:31 AM

      If you look at the 4069 datasheets there are several in and outs. This layout just uses different ins/outs than the vero. Still works the same way though and it's verified.

      Delete
    2. ChrisSeptember 3, 2016 at 11:42 AM

      Thank you for clearing this up...great layout

      Delete
  8. UnknownApril 2, 2017 at 4:44 PM

    you made by far the best layout available for the ReezaFRATzitz, i've tried all of them and your's is by far my favorite

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  9. Ryohei JPNSeptember 15, 2018 at 5:58 AM

    Hi,
    I'm about to try to build this. Could you tell me whether these EQs work as active or passive?

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  10. BlakeAugust 9, 2019 at 6:20 PM

    I just find here, only the 4069UBE. Any problem?

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  11. ClaudioMay 24, 2020 at 10:39 PM

    I got not enough gain. I feel like chords are OK but single notes has some decay and feels farty even when bias at max, almost 8.62v. I checked all the values, any help? Increasing to 1m gain pot will increase distortion?

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    Replies
    1. ClaudioMay 26, 2020 at 8:49 PM

      Note to myself, after one week testing every component I found with an auidoprobe some weak signal after gain pot, wire 1 and 2 from gain pot were inverted. Problem solved. CD4069UBE rules after some MC14069.

      Delete
  12. HalfretAugust 24, 2020 at 7:08 AM

    Sounds great! Thanks!Made with mullard tropical fish, old carbon composition and CD4069UBE. Nice job!fabulous page!!

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  13. H.A.October 30, 2022 at 5:43 AM

    There's one member of this family missing: https://www.freestompboxes.org/viewtopic.php?t=11417&start=40 Would be great to also have a good PCB layout for this. :-)

    ReplyDelete

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