The Synthrotek MST Unity Gain Mixer combines five different signals at each of its inputs and outputs them as a summed signal. Though the module has been optimized for use with CV signals, it is also capable of processing audio rate signals.
MST Unity Gain Mixer Features
Two 5:1 Unity Gain Mixers
5 inputs per channel
Mixes both AC signals (audio) and DC signals (gates, triggers, CV)
Channel A output normalled to first input of channel B