Wave Multiplier
Ken Stone / Catgirl CGS29 wave multiplier module. The CGS29 is a wave multiplier in 3 sections based on the original Serge wave multipliers. see here: This demo shows the wave multiplier being fed square and triangle wave audio signals from a CGS48 VCO and a Thomas Henry SN-Voice (triangle wave output) being modulated by a triangle wave LFO. This module is capable of more amazing things. Similar to the Catgirl Wave Multipliers module, but in 2 HP.
http://www.cgs.synth.net/modules/cgs29_wave_multiplier_v11.html
This Module is discontinued.