Please READ. Effects tutorial with the Traktor pro 1 or 2. Turntable STOP effect assigned to keyboard or any midi device. In this tutorial- Akai LPD8. FULL SCREEN and pause/play to view the assigning setup. In the keyboard setup, the keys V and SPACEBAR were assigned. You can choose which ever keys but make sure the keys do not have double assignments. The Turntable FX needs 8 bars to register so you will need it to hit it twice when you first start.