The KJams Rotary 2 is dual speed rotary simulator. It was designed after careful study of, and testing against, the original rotary speaker. It has a woofer and a tweeter with a crossover at 800Hz. The two speakers run at different speeds and accelerate and decelerate at different rates. The volume changes based on speaker angle, as does the pitch, offset by 90 degrees. Careful testing against the best simulator pedals shows the Rotary 2 is in the same class.