With its freely assignable controls, the DD-500 delivers unmatched creative expression and performance flexibility. By default, the A, B, and TAP/CTL switches offer intuitive control for two patches, bypass, bank selection, tap tempo, and more. However, they can be customized to operate in alternate ways, such as providing top-level access to three different delay patches, or allowing you to use two patches at once for layered delay sounds. Instead of tap tempo, you’re able to assign the TAP/CTL switch to various real-time functions like Warp or Twist for a wide range of expressive effects. Even more parameters can be manipulated via MIDI commands or by connecting an optional expression pedal or external switches.