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.

Thursday, February 15, 2018

MultiCab Sim

Got a request for this one, designed by Daniel Schwartz. Seems to be a pretty versatile cabinet simulator. Might be handy to throw this in the same box as the Mini Amp from earlier this week. More info, schematic, etc here on DIYSB.

Also the next episode of the DIYLC tutorial is up on YouTube. Forgot to plug it in the post from Tuesday.


  1. My request !! you really make me feel so happy . i promise to verified very soon. Thanks again ! .

  2. I really like your videos. Thank you, I hope you continue to do so!

  3. Verified! Another great cab simulator!

  4. Hi! I love your website :)
    I'm a newbne so I have a question: if i make 1 W Amp or The Ruby Amp and i would like to throw it in the same box with The MultiCab Sim, which one should be first in the circuit? An Amp?

  5. Ohh.. Ill try. I have a problem with Ruby (I hear noise only), but 1 Watt works fine for me. Ill find a failure and make some comparison with amps. Thanks!

  6. Hello,

    I have a problem,
    loud click when the pedal is turned on

    what can be done about this??
    Thank you

    1. Try adding a pulldown resistor from input to ground (1M).

  7. After the third attempt I still don't know what I do wrong. It doesn't work for me. I checked all components. Could someone help me? Please.

    1. I just finished it. It works. I put at the end of my chain before power amp and it sing nicely.
      From my experience, mostly my circuit doesn't work because few tiny cold solder drop between lines and accidentally connect those lines. Usually after I finished polulating a board, I take a razor and run the tip through gaps between lines and brush it with toothbrush. Work as clean as you can and be patient. If the layout marked 'verified', mostly you will succeed with careful build.

  8. hi everybody!
    is there anything that i should care for, if i would combine this cab sim with the "active guitar di box" from this site?
    i,m trying to build something like a "ultra red box deluxe!" for example: do i need two gain controls? ( maby i can replace one pot with a fixed value.....)

    greetings from austria
    ps: did anybody the boss keely ds1?, ( mine will not work at all)