The purpose of the CV in and CV out jacks is to enable the chaining together of two or more 4T Celebration Channels. To do this you simply need to connect the CV output of one unit (master) to the CV input of the next unit (slave) using a standard stereo TRS cable. When linked together, the slave unit will follow the master unit in respect of the attach, release, ratio and threshold controls. All other controls on the 4T units will remain separate...