Identical to the 5000 pedal, but with a solid power footboard, the 5000ADS bass drum pedal features the Accelerator™ (AD3) drive system which offers and eccentric motion that creates an indirect relationship between the sprocket and the footboard. THis increases the velocity of the pedal by shortening the length of the stroke. It is recommended for situations that require increased speed and sensitivity. Other features include aluminum hex shafts. These pedals can be customized to fit the needs of any blayer.