The A4mkII Control Inputs allow you to do a helpful ducking trick. This works by using an ENV on a CV track to fake the amplitude envelope of (for example) a kick drum, which is then used to lower the volume of all the other tracks. This is kind of like sidechain compression, but obviously there’s no real compression happening here.
Sample Recipe (adjust to taste)
On the CV track
Take CVA output and run it to a Control Input 1 with a cable.
Set CVA type to Linear and set the value to 0
On CV ENV page, set A: 0 D: 32 S: 0 R: 0, LEN: 0, DST: CVA Value, DEP: 64
Put trigs on 1/5/9/13
Global Settings
Select CONTROL INPUT 1
Set mode the CV
Kit Settings
Select CONTROL INPUT 1
Set the destination for each track (T1-T4) you want to effect to AMP: VOL and the amount to -128.
(you can adjust this to taste depending on how much you want to effect each track)
Now whenever the envelope on the CV track is triggered, it creates a positive voltage into Control Input 1, which is then applied as a negative value to the volume of the tracks you have defined by an amount determined on the Control Input 1 modulation setup page. This is just a sample setup and you can do a lot of exploration with the CV ENV.