The teenage engineering rumble Module is a hardware expansion for the OP-Z synthesizer featuring a built-in haptic subwoofer that uses high-definition vibrotactile feedback and psychoacoustic technology. With a frequency response of 10 to 150 Hz, you'll be sure to feel the bass as if it's coming from a large subwoofer.
The module is easily installed by removing the base plate from the OP-Z and snapping it into place. The plus and minus buttons control the output level. Additionally, the rumble module features a silent metronome mode, which provides a physical pulse on the beat to enhance your live performances.