Module A-149-1 is the first module of the A-149-x range. In this group we present by popular request several functions of Don Buchla's ''Source of Uncertainty 265/266'' (SOU) modules that cannot be realized with existing A-100 modules. Many functions of Buchla's 265 and 266 SOU can be realized with existing A-100 modules. For details please refer to A-100 patch examples..