Counterparts is a 5 module, 6U 100 Series mini-system. While intended primarily as a complimentary system to the Mort's Barge, Counterparts can also work well in other contexts  . The system contains:
 
• Dual Square-Wave Generator Model 144
• Control Voltage Processor Model 156
• Sharp Cutoff Filter Model 191
• Six Channel Mixer Model 106
• Dual Ring Modulator Model 111 (not pictured)
 
The system is housed in a powered black aluminum boat (external walwart is available for EU customers only).