Tag: Synthrotek

Rat King Modular TONE – DIY Build

Rat King Modular TONE - Eurorack Modular Build

Tone DIY Kit

For our first build of September, we were honored to receive one of the first Rat King Modular TONE kits from our friends over at Synthrotek

A relative newcomer to the Eurorack Modular scene, the Rat King is quickly proving to be a master of modular synths. Being the third module in the series, we have to say that the TONE module pairs well with its brethren kin; the EVENT and the Random SEQ

So, what makes the Rat King Modular TONE different from other VCOs?  Well, besides the beautiful mustard gold PCB and the matte black panel with gold laced graphics, the TONE uses the Alfa AS3340 chip (a CEM clone), made famous by its outstanding quality.  It is hard to go without saying that this VCO has some grit and some warm sounds that are trackable over an entire 8 octaves. 

Let’s get onto the build … All Hail The Rat King! 


Synthrotek M/DIV – DIY Build

Synthrotek M/DIV Eurorack Modular Build

Completed MDIV Module

For our final build of the summer, we take on the Synthrotek M/DIV Eurorack Module. This module is apart of the “slider series” developed by Synthrotek and has the ability to multiply or divide clock signals with a quick slide. What sets this utility module apart from other similar modules is that the M/DIV can do both (multiply and divide) due to its dual clock channels. It also has a master clock out bringing the total outputs to 3.

The M/DIV also contains a clock reset input and a “tap” tempo button to help your performance reach new heights. The sliders that Synthrotek uses are reactive and contain a small LED that easily gives you an idea of what is going on with your clock signals.

MDIV or M/DIV?

So you may have noticed the spelling the M/DIV on the packaging or have read related media that shows it being spelled in other ways (MDIV or M-DIV).  The correct spelling of the module is “M/DIV” and for our purposes here, we will also refer to it as the M/DIV instead of any other way of spelling.

Let’s get onto the build …


Noise Filtering Power Distribution Board by Synthrotek

Noise Filtering Power Distribution Board - DIY Kit

Instagram Photo - SR Noise Filtering Power Distribution Board Kit

At the core of all our modular racks is power. As with any eurorack module, the most common type of connector is the ribbon cable either with a 10-pin connector or a 16-pin connector. What those connectors plug into is either a busboard on a PCB or a flying bus cable. We will be taking on the Synthrotek Noise Filtering Power Distribution Board for our first June build.

We have a large custom Eurorack case that we need to fill with modules and we needed noise filtering distribution boards to ensure we have the best power/noise filtering available… Synthrotek answered the call!

We opted for this board because it has power on all three rails (-12, +12, +5) and contains an LED for each rail so that we know the power is flowing like it should. The cool thing about this distro board is that it also has its own ground connection on each rail. It can be used in conjunction with the Synthrotek Power Supply System or it can be used with various other power supplies.

On to the build, time lapse and galleries…


Synthrotek Eurorack Nandamonium MK2 Build

Synthrotek Nandamonium MK2 Euroack Module - DIY Build

For our most recent build, we take on the 2019 Synthrotek Eurorack Nandamonium MK2. It is described as a module with low pulsing drones enhanced by high-pitched laser sounds and dive bombs. It contains 6 square oscillators with a delay. Originally released as a desktop synth, Synthrotek has brought the Nandamonium back in 2019 and made it available to Eurorack owners worldwide. It is available preassembled, as a DIY Kit or a Panel/PCB combo.

At a whopping 38HP, this dual 4093 NAND synth is a beast and the sounds that you can get out of it will bring a unique and edgy sound to your modular rack. Desktop synth users, don’t fret.  Synthrotek has you covered.  They also produce a desktop module, complete in 3 forms (Assembled, DIY Kit and Panel/PCB combo) Let’s get onto the build …

Nandamonium - Completed Module
The Synthrotek Nandamonium MK2 - 2019 Eurorack Module - 6 drone oscillating madness!

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