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Queen of Bone 2 (King of Tone™ 18v clone) PCB

Rated 4.80 out of 5 based on 10 customer ratings
(10 customer reviews)


Inspired by the King of Tone™  dual Marshall Bluesbreaker circuit – but with 18v charge pump onboard.  Two overdrives in one pedal – great on their own or stacked. Uses standard 9VDC and steps up internally to 18V. Includes 3PDT breakout board for easy wiring.  Sweet.  


In stock



You found it! The Queen of Bone 2 dual overdrive PCB is in stock and shipping now.

QoB2 Build Video (YouTube!)


QoB2 Bill of Materials (EXCEL)

The original QUEEN of BONE was one of our most popular DIY projects, and for good reason.  We took the concept of the boutique King of Tone™ dual Bluesbreaker circuit and added an added an onboard 18V charge pump for increased headroom and clarity.  Even better, the 18V charge-pump option is built in, meaning more headroom and clarity…and is still powered by a normal 9v DC (Boss Style) pedal power supply.

So how did the QUEEN of BONE 2 become even better?  Let’s see:

  • Detailed build video with helpful tips and tricks for a successful build
  • Now includes a “snap-off” 3PDT daughterboard for easiest wiring ever!
  • Onboard charge pump is always at 17V-18V
  • Internal DIP switch (which allows clipping selections) is now a 4 gang
  • Everything mounts to the PCB except the DC jack and IN/OUT jacks
  • All jacks are top mounted to save pedalboard space
  • Two choices where to install your LED
  • Easier to populate and build due to revised PCB layout

The QUEEN of BONE 2 DIY PCB board is essentially is designed to be mounted in a Hammond 1590BB size enclosure and uses a 3PDT footswitch for TRUE BYPASS on each overdrive side.   A common example is to set one side for a clean-ish boost and the other dirty; Then cascade the clean into the dirty side.  If you ever have run two overdrives back to back, this is how it works.  You can use the clean itself, the dirty itself, or both for tons of gain.   The possibilities are nearly endless with the internal DIP switch diode selection and internal presence trimmer controls.

The QUEEN of BONE 2 was designed with the DIY pedal maker in mind for the best building and playing experience possible.  Order yours today!


10 reviews for Queen of Bone 2 (King of Tone™ 18v clone) PCB

  1. Rated 5 out of 5

    Carl hagen (verified owner)

    Be patient on this build, as there is a lot to solder. It’s an absolutely magnificent sounding effect!
    It feels a little like the OCD. An overdrive that responses to your playing style and sounds fantastic with any setup.
    I praise Rullywow for the pedal design. It’s my favorite overdrive of all time!

  2. Rated 5 out of 5

    Nate (verified owner)

    Really great circuit, with a beautiful, well-thought out layout that couldn’t be easier to assemble.

    This is a faithful recreation of the King of Tone, but at a price that anyone can afford! Also, the customer support is fantastic!

  3. Rated 5 out of 5

    Daniel (verified owner)

    Just got thru building a KoT CLone using this PCB. Very well made, excellent layout. super easy instructions with great suggestions. I have a few more in my Cart 😉

  4. Rated 4 out of 5

    Mike Pougnet (verified owner)

    Just built the pedal. I noticed a high frequency noise when engaging the pedal. Worse on left side stomp. Seems to increase when I turn up the tone. I thought it may be a faulty film cap, but now I’m wondering if it is a electro-cap being stressed. There is no mention of the voltage rating for caps, but I suspect 16V is not enough with the 18V boost. Can you still implement a 9v jumper somewhere? Other than that I love the design and I think the tone is there!

    • rullywowr@gmail.com

      Thanks for the comment. If you are getting whine from the pedal then the IC you used for the charge pump is not audio rated. Try a TC1044SPCA or equivalent. Also, if you want 9V you should be able to just pull the charge pump IC and have it. Caps would be at least 25V as mentioned in the instructions.

  5. Rated 5 out of 5

    Christian. (verified owner)

    I was feeling ambitious and built this as my first full pedal build (I had a bit of soldering to PCB experience) and I could not be happier.

    After a friend and I put the QoB up against a KoT in an A/B comparison, I left feeling really chuffed. I run one side on clean boost and it’s virtually always on as part of my sound, I love it. I’m really happy with how it gently shapes/enhances my tone (on both single coils and humbuckers).

    The only thing I’m disappointed about is my measurements before I drilled in the enclosure haha. Great quality PCB, great instructions, great customer service, give this man your money.

  6. Rated 4 out of 5

    Bob Davis (verified owner)

    As a builder of many Rullywow projects I’m looking forward to getting this working. At the moment I’ve got no signal. The bypass works fine. So I started by measuring voltages. My 9V wall wart is putting out 15V. That may be one problem. But when I measure voltage where the power goes onto the board I’m reading +3.5V. I’m assuming I have a short or wrong part somewhere beyond the power inputs. Any inputs would be appreciated.

  7. Rated 5 out of 5

    Lars F (verified owner)

    This is a really nice sounding overdrive.
    It was fun to build. Very clever layout and with the drilling template everything came together easily.
    I did track down some NOS diodes, but not so sure how much it matters. Curiosity got the better of me I guess.
    The best tone for me is the first side set up as a clean boost going into the second side setup as an overdrive. Really nice full range overdrive sound.
    Have never tried the original King Of Tone, so have no idea how they compare.
    Can recommend this project wholeheartedly.

    • rullywowr@gmail.com

      Thanks Lars!

  8. Rated 5 out of 5

    Bob Davis (verified owner)

    Finally got it working. WOW! Excellent job! One of the LEDs won’t work but everything else in the pedal seems to be just fine.

    • rullywowr@gmail.com

      Awesome! Thanks for supporting rullywow.com, Bob!


  9. Rated 5 out of 5

    panchito202 (verified owner)

    I have buy it and i’m doing the bom in Mouser, some recommendation for capacitors brand and voltage?

  10. Rated 5 out of 5

    Alejandro Garcia Canelo (verified owner)

    Thank you very much!!

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