1) Capable of being programmed 
Able to have the parameters changed by the user, especially in a computer controlled device.
Equipped with software that enables the user to create new sounds or other assignments by altering parameter settings and storing the new settings in memory. An individual control parameter is said to be programmable if its setting can be stored separately with each individual patch.
programmable An apparatus or an operation that is capable of being programmed.
able to run a program
able to be given computer instructions
capable of being programmed.