Oberheim OB-X Blurps Silicon Breakdown Download Share Oberheim OB-X Blurps by Silicon Breakdown Share link This example sound shows how the Sample and Hold can modulate the filter frequency to create some great sounding blurpy effects. The OB-X is in Unison mode so all 4 voices are used for each key press. 0:00/??? 1 Oberheim OB-X Blurps 0:20 Oberheim OB-X Blurps by Silicon Breakdown Share link 0:00/0:20