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!