Midi help! Currently have TRS cables: expression pedal to DMC-8 black jack, Compadre from volume jack to DMC-8 red jack, DMC-8 blue and white jacks to expression jacks on Timeline and Mobius :
Swiss Things and Using a Volume Pedal as Expression Pedal
Expression Pedal Basics: Take Control! - Premier Guitar
Mission Engineering Inc EP-1 Expression Pedal - Black Bundle with Hosa CSS-103R Balanced Interconnect Cable - 1/4-inch TRS Male to Right Angle 1/4-inch TRS Male - 3 foot | Reverb