Perhaps the worlds rst “utility” module, the 156 was originally designed as a “front end” for the 158 Oscillator. Dual channels provide comprehensive CV control and manipulation including- mixing, attenuation, o set, and inversion. This version is completely authentic to the original module, including an all discrete transistor core, and an individual inverted input.
The 156 was initially intended for use with touch plates and unquantized sequencers. As such it is less than ideal
for users looking to use it as “front end” to the 158 in 1/v oct system. The module has a maximum gain of 1, meaning that if o set or mixing is required, it is impossible to maintain a 1/voct relationship while these features are being used.
For use with 1/v oct systems - see the 156 M.
Catalyst Model 100 modules are as technically accurate reproductions as is possible of the legendary Buchla 100 system from the 60´s. A/B tested with the original 100 series system from the San Francisco Tape Music Center (Now located at Mills College, Oakland).