“For sale is the Ult Sound DS-4 – a great-sounding ultra-rare Japanese 4 channel analogue drum synth with unique cascade triggering option – accessed by pulling individual channel sensitivity knobs.
An instrument that produces both analog drums and strange sounds. Nice high quality pots and sliders build to last. It is possible to concatenate all the sections for make sequences, great for experimental music.
Made by Toyo Gakki and was widely used by the Yellow Magic Orchestra.
This is the rarer of the two models that were originally designed. A black face model and this blue and yellow design. This particular unit was one previously used by Mr. Takahashi.
The unit comes as a whole set with all original drum pads, power supply, accessories and a hard case, as seen in the photos. It uses a 100V power supply with 12V input voltage.
There are currently no known issues with this unit, it is fully operational.
Cosmetically the unit is in good condition, given it’s age. One portion has rust as seen in one of photos, besides that they are a few very minor scuffs.” Link