The SP-H9 expression controller with integrated switch connects to the Eventide H9 with a single cable.
 
An external aux switch can also be connected via the input on the SP-H9. This offers the convenience and flexibility to choose between either the internal or external switch to control functions within the H9.
 
An LED indicates that the expression pedal is connected correctly. The SP-H9 is powered from the H9 via the TRS cable. No battery or external power supply is required.