DDrum 4 is a drum module created by Clavia. The instrument has 6 assignable outputs, 500 instrument voices, 20 drum sets (16-bit samples). MIDI implementation allows you to load libraries. The device offers nine trigger inputs, five of which have a mute function.

There is also an input for the hat pedal allowing for controlling the sound from closed to open.

The device comes with Cast Aluminum pads with a plastic surface and an aluminum casing. The pads have a position sensor, detecting the impact site on the sensor surface. There are two types of pads - Cast Precision and Cast Acoustic, soundless and sounding respectively.

Dennis Chambers, Anton Fig, Jonathan Moffet and Dave Weckl use the Clavia devices.