Hello there , the POLY 800 was KORG'S first midi synthesizer . It was made in 1984 , it does not support sysex information . New patches are loaded in by tape through the tape in/out jacks on the back . The POLY 800 can only send on midi channel 1 , but you can edit it's receiving channel . This synthesizer was made when midi was only 2 years old . The sequencer holds 256 events , you record in step time and there is a switch on the back labeled " sequencer enable/disable " . That switch will tell the sequencer to play back or to record . As far as using it with cakewalk , just record it using channel 1 ( since it only sends on channel 1 ) and then edit the cakewalk to play it back on whatever channel you like and then set the receiving channel to match .