I bought a Hikari Duos Eurorack a while back. It is one weird gizmo. Here is a link where you can find the block diagram. Internally there are two oscillators, both pitch controlled by the big knob, two LFOs, two Low Pass Gates, and a Rungler type random steps generator. The little manual isn’t much help. You just fool around with it.
Here the Duos is stuck into a pod with the Reverse Landfill Monotropa manual filter and feedback module and a uBurst version of Mutable Instruments Clouds. Both channels out from Duos are mixed together into Monotropa, then the Monotropa goes into the left channel of uBurst. The key to this patch is using the Duos gate output to trigger the uBurst, which is in granulator mode with density off, so that Duos is triggering each burst. Finally the CV output of Monotropa (which seems to be the Rungler output) controls the pitch of uBurst, allowing it to play a silly little tune.
A block diagram for the Duos is available on the Hikari website. I bought the desktop version 6 weeks ago and it’s a masterpiece of sound engineering design. I think 10 years from now it will be considered a noise synth classic. The Hikari Duos is capable of very nuanced and unique sounds that are not shown on most YouTube videos that focus on chaos noise. I plan on ordering the Monos CV desktop in a few months.
By golly, you are right! I grabbed the block diagram and put a link to it in the post. That’s a great help. Now I can see the asymmetry, that LPG1 is controlled by CHAOS and LPG2 is controlled by LFO B. I wish there was a way to control the depth of CHAOS modulation on the two oscillators and LPG2. Without that there seems to be too much chaos. Maybe I’ll hack into it and change the LPG2 modulation from CHAOS over to LFO A. That would make it perfectly symmetrical and maybe more to my liking. Would be cool if there was a jumper for this option.
Thanks.