rumble is the second hardware expansion module for the OP-Z.
it's a built-in haptic subwoofer, using high-definition vibrotactile feedback and psychoacoustic technology,
allowing you to feel your music. when using rumble you will feel like you're holding and listening to a deep sounding subwoofer. the frequency response 10 – 150 hz is designed to
maximize impact while minimizing additional energy consumption. it also features a silent metronome mode, great when performing live to always know exactly where the beat is.
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THE RUMBLE MODULE IS AN ACCESSORY TO THE OP-Z