PO-33 K.O! - how do i delete a sound? November 05, 2021 23:29 Updated hold [record] and press [sound] to delete the currently selected sound. for more information see the user guide. Related articles pocket operator - how do i clear a pattern? [video] pocket operator - how do i factory reset it? [video] pocket operator - how do i turn it off? PO-33 K.O! - how do i change the volume level of an individual sound in a sequence? PO-33 K.O! - how to transfer data for backup and restore. [video]