This is an EP-133 K.O.2. I purchased it new, imported from the original manufacturer, but I'm selling it because I haven't used it much. I've only used it two or three times. I believe there are no issues with the faders or buttons. I'm a bit worried about pushing them in, so I haven't attached the fader knobs to the unit (they are included). Please refrain from price negotiations due to shipping costs.