Electro Harmonix 8 Step Program Analog Expression/CV Sequencer w/Power Supply and 4 Free Cables Bundle Includes 4 Free Cables! Four sequence direction modes: Forward, Reverse, Bounce and Random Rotary encoder gives you control over glide rate, direction, sequencer length and depth Save, store and recall 10 presets. The optional 8 Step Program Foot Controller expands that to 100 presets! 9Volt power supply included