The most powerful utility circuit you may ever have in your pedal arsenal.

4 in stock

SKU: PCB-SB2 Category: Tags: , , ,


The Splitter-Blender PCB is a utility circuit designed by Runoff Groove that nobody knows they need until they realize that they absolutely can’t live without it. At face value, it is simply a two-channel mixer with two pairs of high-quality, Klon-style buffers at its input and output (i.e., there are four buffers total). But its real power comes with what you put in between those input and output buffers.

Do you want to trail-blaze some new tonal textures? Plug two separate effects loops into each send/return and mix them together. Do you want to blend some of your effects with your clean signal (i.e., you’re a bass player)? Plug your effects into one of the send/returns, and jumper the other one. Have you got a bunch of tone-sucking pedals in your chain? Throw them into the loops of this circuit. The Blend pot allows you to control the level balance between the two channels. You can even use it as a simple splitter to output your signal to two amplifiers.

And if one of your pedals happens to flip the phase of your signal and is giving you some of that annoying phase cancellation, the circuit includes room for a switch that lets you flip the phase of one of the effects loops. You can even modify the direction of the blend potentiometer with a DPDT switch connected to the pot direction pads.

The Splitter-Blender PCB might even make you a coffee if you ask it nicely.

Note that this is the price only for the circuit board. You will need to source your own parts.

  • Build Document (Coming soon!)


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Return Policy

I gladly accept returns and exchanges.
Contact me within: 7 days of delivery
Ship items back within: 14 days of delivery

I do not accept cancellations on custom orders.
But please contact me if you have any problems with your order.

I cannot accept returns or exchanges for custom or personalized orders
unless the item arrives damaged or defective.

Conditions of Return:
Buyers are responsible for return shipping costs. If the item is not returned in its original condition, the buyer is responsible for any loss in value.

Shipping Information

Processing Time:
Depending on availability, the time I need to prepare an order for shipping varies. For custom builds, please allow 3-4 weeks lead time. For finished builds, please allow 1-2 weeks for processing.

Estimated Shipping Times:
Eco Post: 7–5 business days estimated distribution time for most destinations (see below), 10–12 business days estimated distribution time to Australia and Hong Kong.
Registered Mail: 4–8 weeks
I will do my best to meet these shipping estimates, but cannot guarantee them. Actual delivery time will depend on the shipping method you choose.

*** UPDATE***
Postal systems around the world appear to still be adapting to the global impact of COVID-19. This means that shipping times may be longer than we had previously been used to. I ask that you please be patient while we track the status of your package together.

Shipping Methods:
I ship out all pedal orders via Eco Post. This method is typically quicker than Registered Mail (advertised estimation is 7–5 business days, but due to the current situation has been known to take a bit longer, depending on the country), and it also features computerized tracking and proof of delivery.
This method is available in the following countries: Austria, Australia, Italy, Ireland, the United States, Belgium, Brazil, the United Kingdom, Germany, Denmark, South Korea, the Netherlands, Hong Kong, Greece, Japan, Norway, Spain, Poland, Portugal, Finland, France, Canada , Sweden, Switzerland, Thailand, Russia.

For PCB orders, you can choose between Eco Post and Registered Mail.

Customers living in Israel can arrange for Local pickup, just contact me for arrangements.

Customs and Import Taxes:
Buyers are responsible for any customs and import taxes that may apply. I am not responsible for delays due to customs.


Each Carcharias Effects pedal is hand-made by one person in his home workshop who loves making music, and making things that make music. Every purchase you make enables me to continue making more pedals, so your support is very much appreciated. That said, I take responsibility for the build quality of every pedal I make comes, and offer a 24-month warranty on each one, not covering normal wear-and-tear or abuse.

All the PCBs that I sell on this site were designed personally by me, but the fabrication is outsourced to third-party PCB fabrication services. Once they are designed, I order them in relatively small batches. I personally test every batch that I receive; however, as I am a strong believer in minimizing waste, there are cases in which I may sell perfectly functioning PCBs that might have some design flaw. I take responsibility for these design flaws (if any) and will specify their fixes or workarounds in the product's specific build document.

If you should encounter any issues with your product, please feel free to reach out to me via the contact form on this website. As I am based in Israel, I understand the inconvenience added by international shipping, and so I will be happy to assist in troubleshooting with you any problems before resorting to international shipping in case a repair needs to be made.