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.

Monday, May 1, 2017

Way Huge Green Rhino Mk II

Here's the newest version of the Green Rhino from Way Huge. It's similar to a Tube Screamer, but with a few extra stages and lots of modifications. I've laid it out for board mounted pots in a 1590BB. Here's the schematic for reference.


  1. What the hell is going on there with all those transistors?

    1. Charles, you can use just 1 transistor if you want. This is a technique used to reduce noise

  2. I had the same thought. For extra input bufferiness? Maybe they were just trying to use up transistors. haha

  3. Thank you very much for this one!

  4. Hi

    Transistors used are PN2484, not PN2428

    there is no such thing as pn2428, but there is a germanium one, called 2n2428 which is quite rare and is not suitable for this circuit

  5. Hi.

    I was wondering if you can help me with something.
    I like the tone of Green Rhino and I would like to use it as a clean(ish) boost.
    But is has too much drive.
    Will replacing the 3K3 resistor (R21 on the original PCB) with a 4K7 resitor help?


  6. This thing sounds better than most tube screamers I've head.

  7. verified too! It's not tubescreamer, & I"m glad. It's realy cool over. Used lf353, third used tl062,072,082, every working good. Resistor 61k going to gain should take 10-15 kom, I used four clipping diodes. I added mod, clipping couple mosfet n7000 like "zen overdrive". good sound!