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, March 22, 2018

MXR Commande Sustain

Here's one from MXR you probably haven't heard of before. It was apart of their Commande line of plastic boxed effects from the late 80s. They aren't highly regarded because of the plastic, but the circuits were pretty well designed. The circuit in question today is a better design than the DynaComp, offering less distortion and more sustain. It does have a little less compression range than the DynaComp, but also less noise. (And really, who needs that much squish? haha) Couldn't find a demo of this one, but the schematic and discussion can be found here on FSB.


  1. great job
    i finisched it quite now , i used the pcb layout and after 1 second..... WOW
    works perfectly!!! i substituted the 15 uf caps with 10uf, and instead of 240,and 24Kohm resistors i used 220 and 22k.
    i think you can mark this as "verified"

    many hanks for the great layout

  2. Собрал, работает. Благодарю за печатную плату. Транзистора КТ315 npn и КТ361 pnp. Вместо резисторов 3,9М поставил 3,3М. Конденсаторы вместо 15uF поставил 10uF. Ручка sensiviti работает против часовой стрелки. Добра!)

  3. Built it, works fine. Thanks for yet another good layout.
    Just one point: The sustain pot stipulated,C500k, is connected in reverse on this layout. The schematic calls for A500k. So either use A500k and wire as shown here, or use C500k and swap 1&3.

  4. Is this one?

  5. Q4 - 2SC1015 or Q4 - 2SA1015 ??

  6. Hi,
    Icannot find 2sc1015 anywhere, also i cannot find its datasheet. Is it SA or SC ?

  7. It is 2SA1015. I build it and works fine. Verified. Thank you.