The Suiseki is Old Crow's 4HP eurorack version of the famous Small Stone phase shifter from the mid-1970s.  From Pink Floyd to Jean-Michel Jarre, this is the sound of those string pads of days gone by.  The Suiseki uses a common part list, replacing  the CA3094s in favor of widely available LM13600 or LM13700 ICs.  The front panel is black FR-4 material and mounts nicely in just about any cabinet or skiff. Note: this is a bare-board set.

Build doc for Suiseki board and panel.

Audio demo using a Jan Ostmann string tone generator as the audio source.

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