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, March 6, 2018

zVex '59 Sound

zVex's new '59 Sound looks to emulate an overdrive '59 Fender Bassman amp and is essentially a tweaked Box of Rock. I've left out the boost section (which is essentially a SHO after this circuit), but can be easily added with the old SHO layout here on the blog.

Also, there's another installment of the DIYLC tutorial up on YouTube today. I actually am not using DIYLC all that much in it... 


  1. congratulation!!!!!!
    another great layout.
    build it, played it - loved it!!!
    sounds great with my homemade bedroom amp, very dynamic with the typical fender "twang". cant wait to test it with a live Equipment.

    many thanks from austria

    one question: anybody heard something about a pedel named "claptone" iḿ looking for a schematic or a pcb layout!

    1. you mean Clapton mid boost right?
      if you want soo fast
      here alternative :
      - traced this
      - search in FSB + DIYSB
      - wait David make layout

      have fun ;)

    2. Yeah, it'll be on the blog in a couple weeks. lol

  2. Really love the sound of pedal in demo, too good, is this verified?
    and this circuit has no boost?

  3. i,m new in this forum, but i think you can mark this one as verified!
    i did the pcb version with the part-values as shown in the layout and it works perfect!
    thanks again for this great work.

    ps: please continue with your diylc tutorials, i love them!!!

    greetings from austria

  4. Hi, I would like to try to build this project, but I would have some questions.
    the resistor how many watts are?
    are the potentiometers logarithmic or linear? I do not know the A / B / C codes
    Thank you very much for the availability and sorry for my english

    1. Resistors are 1/4 watt. A = logarithmic, B = linear, C = reverse logarithmic

  5. Thanks for this one, David! This is the first one I ever built on perf. Was a different experience, for sure!

  6. I verified it also, quite geat sounding. I used a fixed 4,7k Resistor instead of the Drive pot, and it works beautiful. Also i used 519,4kOhm(510+2*4,7) instead of 521kOhm and not a problem at all.

  7. Hello there!
    Juste mounted this circuit and have some problems : no sound at all.
    There's curent everywehre it need, no short.
    The signal is ok until Q1 (G) and After, nothing.
    Can somebody please help me?
    Is the BS170 broken? (I checked the direction and swaped Q1-2-3)
    Thanks a lot!

    1. I believe there' s a short right before that Q1. Either that or they don't work.

  8. Hi ! I only have a 10k pot for the drive pot ? Will it work as expected ? Maybe should I use a 10k resistor in parallel (i've read that it's messing with the curve... but don't know how bad it can mess with it...)

  9. Hi, I've built a BOR without SHO from your layout and I love it, it works perfectly at 18v. Circuitry-wise what's the difference between '59 and BOR? Is it just the voicing?