Roland u-220 sound module. The machine is perfect working order with the internal battery being renewed in November 2012). The machine has been set back to factory settings so is ready to go. Usual marks on the rack mounts.There is no instruction manual but I will supply a cdr with the pdf version of the manual. I will also include a U20/U220 factory settings card. These factory setting cards are very rare find even on ebay as Roland no longer manufacture these. I got this card from a Roland tech specialist and I've loaded this to the machine and re-initialised it. The machine will be sent out in not it's original packing. The machine has its mains supply.