dimi3
2
The Volca collection is great fun.
Yes You can control the Volca with the A4. the CV on the A4 has an adjustable voltage so you should try 1 volt first then 3v then it may be 5v. I can remember off hand. The Volca can be driven from the audio on an iPhone. there is a MonoTribe app which allows you to use the headphone jack as gate and it works with the volca series.