Lone Wolf Audio Black Shakes Phase Sample Hold Ring Mod - UsedLone Wolf Audio's Black Shakes is an awesomely expressive phaser pedal with plenty of wild futuristic sounds ready to go. Featuring a digital recreation of the Sample Hold function from Lone Wolf Audio's Acetylene Nirvana pedal, the Black Shakes also offers expression pedal functionality to get up close and personal with the phaser effect for crazy twists and turns. This Long Wolf Audio Black Shakes is in very good condition and is fully functional.